It never stops

>Have been A my entire life, sometimes got ridiculed for it even by irl friends.

The one who dabs the last dabs the hardest bfags

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Afags btfo too hard

the enlightened among us realize that neither are true and the answer depends on how portal physics work.

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A was always the right answer. B is for shitposting

>I don't actually have an answer, that makes me smarter
Okay fag

I did this test in Gmod and the result was B.

>A-theists being this desperate, appealing to authority
Two can play this game.

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I have never understood how anyone could unironically be a Bfag, its so obviously wrong, are they memeing or do people honestly believe it? Its like saying 2+2=5

>this
If it acts as a doorway, then A
If it acts as an impromptu teleporter, then B

SPEEDY THING GOES IN. SPEEDY THING COMES OUT.

i just never got how the cube appearing on the other side would translate into momentum
made me feel like a brainlet

precisely why its A

Wouldn't slow thing goes in, slow thing comes out also hold true then?

>actual physics designer vs game designer
an actual Btard

>B fags thinking a wall of text wins over a concise statement

SEETHING

"slow" is a speed, unless you ask tribesfags

>Pretty much B in my opinion
Yikes. Opinion discarded.

It's literally the how Newton physics work. Instead of the more recent relativity physics. It's whatever rules portals adhere to that rules over it. The proper idea behind B is that space is getting assfucked by having to connect portals and shits out the cube the bait idea behind B is that portal momentum carries over on the box.

B would make for better gameplay mechanics

don't @ me

a wall of text without a final answer

you cant place portals on moving platforms. people here didnt play the game or what?

this is a good point

B is the equivalent to air-stroking your cock and have it literally blast away from your body in a bloody mess.

linkedin.com/in/davekircher
>Software Engineer
DELUDED

Attached: ABC2.png (909x466, 131K)

just because you can't do it didn't stop this thread for a decade.

some one post the webm

He says "in the portal universe". We have always know how this works in the video game portal

The question is how would it work in real life if portals existed

>Includes a TL;DR with his answer
>Waahhh wall of text

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Retard, I'm a pure Afag but at least I try to give B the benefit of the doubt by actually listening to the arguments the more sophisticated Bfags give (there aren't many of them I'll give you that). A is true but A is very intuitive and for many people that's enough, they don't actually understand the physics behind it.

But the portal is the speedy thing, the cube is motionless. Montionless thing goes in, motionless thing plops out due to gravitational forces.

portals don't exist and is pretty much impossible in the real world, unless you create a teleporter that destroys cells and rewrites them on the other end you're not gonna get real about portals.

>the TL:DR is just "I pick B durrhurrhurr"

doesn't exempt the wall of fucking text. nice self post btw.

The object's momentum is not conserved in the games, though, so whatever wrote that doesn't really know what he's talking about.

>Every object in a state of uniform motion will remain in that state of motion unless an external force acts on it.

The brick, as it exits the blue portal, is in a state of motion.

There is no force that acts upon it.

B.

>portals don't exist and is pretty much impossible
oh wow really? Its a hypothetical you tard

I too also watch Ricardo and Miles.

Cube is speedy relative to the portal though.

What the fuck is a Ricardo and Miles. I swear Americans and their attempts to globalize their stupid fucking pop-culture.

Last attempt to elucidate idiots: A or B fags who think their position is backed by physics are wrong, because the conflicting reference frames break special relativity. Of course, in game, A fags are correct. That is all.

strawpoll.com/fy4wde1k
strawpoll.com/fy4wde1k
strawpoll.com/fy4wde1k

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no we are not in a harry potter world you absolute brainlet. if portals existed they are subject to the laws of motion everything else is subject to. to say if they exist but also act completely outside reality shows how much of a child you are.

welcome to Yea Forums where we talk about the pop culture known as video games, gramps.

according to Bfags video related is impossible
youtube.com/watch?v=zL4HSk4MUUw

The portal is not a thing, it can't be used as a point of reference.

You are the brainlet that cant handle hypotheticals

Portal sits on something moving the portal though. That can be used as point of reference.

you mean i refuse to pretend. Have sex.

So let me get this straight.

If an object has zero momentum at the start, then it cannot gain any momentum as a result of the orange portal engulfing it. That's the argument being presented here, in favor of scenario A, right?

So consider this image. Everything starts with zero momentum except for the piston with the orange portal on it. The pillar below the orange portal has zero momentum. The gray box to the right of the blue portal has zero momentum. So what happens when the orange portal goes all the way down and the pillar passes through it?

The pillar has zero momentum, so its momentum must remain zero. I mean, as the orange portal proceeds to engulf the pillar, more and more of the pillar will exist outside of the blue portal. But LOL it's not real motion, right? Zero momentum, of course! The pillar just "looks like" it's coming out of the blue portal during the orange portal's descent! Of course.

But if the orange portal continues to fall all the way down, the pillar will soon occupy the same space as the gray box. The gray box must be pushed out of the way, right? But that would put the gray box in motion. Not the fake motion of the pillar which actually has zero momentum — the gray box has been on the blue side the entire time and knows nothing about portals. It's just getting hit by a pillar. It needs to move. As a result of the pillar invading its space, the box moves, which means it has some momentum, implying a collision in which momentum was transferred to the gray box by the pillar, which can't be transferring momentum because it supposedly isn't allowed to have any.

Hmm. Maybe portals don't conserve momentum after all. Of course, we already knew that, because momentum is a vector, and using portals to change the direction of a moving object as done many times in the game does not conserve momentum.

Oh well. Don't worry, you can always just go "MUH HULA HOOP" instead of responding to the content of my post.

Attached: fuck you.png (1351x525, 15K)

You can't justify your hypothetical with physics because it contradicts physics. Justify it with what would be more narratively interesting instead.

who the fuck cares

like what do you people stand to gain for discovering the right answer to an impossible riddle that breaks several laws of physics

Bros I've figured it out. The A-fags are just trolling.

So, instead of a nuanced take on the problem, you want a single statement that doesn't explain anything about how Portals work?
A developer should know the in-depth mechanics of portals, he just stated what A-fags always say
>Momentum conserved, therefore A!
At that point it's no more than a voice from an authority. The wall of text at least reasons.

why special relativity in particular user

Okay, then explain how the thing that supports the portal, which never touches the cube, accelerates it.

This is the solution to the riddle.

You mean according to Afags. The participants would just stick to the backside of the walls.

Attached: facts&logic.png (1002x626, 29K)

Sorry Yea Forums. This was mental patient who escaped his padded room, he has delusions about B happening and got commuted. He's back where he belongs now.

The cube accelerates regardless if you are going by A or B or it wouldn't even appear on the other side of the portal. A just says it suddenly de-accelerates after leaving the portal for no reason.

humans don't like people who drone on about things, that's why people like labels and easy answers. I'm well aware of this flaw in humanity and just gonna say that as long as portals are fiction, you can say anything you want about portals, but people will digest the most reasonable explanation over a book report.

>worked on the physics for Portal and Portal 2
>doesn't even comprehend that portals don't really conserve momentum in the first place
lmao

Attached: conservationofmomentum.png (450x685, 35K)

Go back to class, A-fags. You've got some relativity to read up on.

>Math Meme

LOL get a load of poindexter over here.

>I did the physics for these games
>in the Portal universe it works this way
This argument legitimately cannot rightfully continue. This is how it works in this fictional setting. Enjoy arguing about something that can't be tested in the real world, fags.

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>portals conserve momentum!
lmao

Attached: portals don't conserve momentum.png (752x572, 19K)

The blue portal room is moving towards the rectangle, and the rectangle is up against the floor
Its the gray box that is pushing against the rectangle, and the grey box will move out of the way

Can you not admit that this is how it would work in that universe

B is wrong. My but instincts tell me and it's never wrong. This matter is settled.

Portals break the first law of thermodynamics so the answer is neither.
>b-but muh portal 2
Portal 2 was a mistake. Portals never move in Portal 1.

>Its the gray box that is pushing against the rectangle
But I said that the gray box starts with zero momentum. What gave it energy to make it move?

Oh, I see. So the orange portal can't give momentum to a little pillar, but it can give momentum to the blue portal's entire fucking universe.

It's actually C
The cube clips the slope and goes out of bounds.

just bend space-time bro. it's easy.

>that universe
Since the initial image does not specify a universe this is a moot point.

So easy in fact, a writer can do it.

Portals never actually move in the second game either. That one scene with the neurotoxins isn't a functional portal, but a setpiece that generates a laser.

The energy comes from the machine slamming the orange portal, that's what has to make the gray box move. But it will only move as fast as the orange portal's machine pushes it.

>Cube simultaneously has no momentum, and emerges from the blue portal at the speed of the smasher.

The energy of the orange portal moving down, is the energy of the entire space of the blue portal moving

but seeing as they are both in the same world i dont know how that would work

But muh magical portal quantum energy

Scenarios in which one portal moves with respect to the other are pretty tricky. It never happens in the game, so it's hard to know what will occur.

But Yea Forums is retarded and can't even comprehend much simpler problems, like this one. I'll post the objectively correct answer to this problem, maybe after a couple of you embarrass yourselves.

Attached: portal_box_problem.png (1072x372, 6K)

>Wall moves past people
>Wall is moving
>Hole slams down over cube
>Hole is moving
Exact same scenario right? Well you're only looking at the orange portal. Look over at the blue portal.
>Cube emerges from a hole
>Cube is moving
Do you think a cube can emerge from a hole while also being completely stationary? It can move while not moving?
>Cube is moving
>Orange portal platform bottoms out and stops
>Cube goes flying

A obviously

Yes, it gets complicated when you start trying to rationalize an entire universe moving with respect to its own self. The simpler way to resolve the paradox is simply to admit that portals don't conserve momentum.

As seen in the game, two portals facing different directions can change the direction of a moving object, thereby violating conservation of momentum. So perhaps two portals moving at different speeds can change the speed of a moving object, thereby violating conservation of momentum. It's not that crazy.

B

>50% split

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Did you even try considering the problem from the frame of reference in which the portal box is stationary?

Here's the correct answer. You cannot refute it, so prepare to frantically change the subject to MUH HULA HOOP as usual. If you don't understand the image I'm posting, don't worry. It just means you never took an introductory physics course. It's not your fault that your schooling was bad.

Attached: portal_box_answer.png (1072x2327, 123K)

Alright, what color is it, and are you an A or B fag?

Attached: The_Dress_(viral_phenomenon).png (220x293, 106K)

Oh yeah, you're right.

Black/Blue B fag
The objectively correct answer

>this is how it works in our fictional universe
>but my real world physics says you're wrong
okay

Attached: 1534876016607.gif (500x354, 449K)

Black/Blue Achad

Real dress is black/blue but because of the strange lighting in this particular photo and the way some people's brains interpret it they see white/gold, which is what I see.

This explains it. A fags are absolutely beyond saving.

Black/Blue C-entrist

Also, Bfag

To illustrate it more simply, here's the original problem () presented in the other frame of reference.

Attached: portal_box_problem_shifted.png (1072x372, 6K)

Ingame answer: Portals don't move so it's irrelevant. If they did, speed is objective in the game world, not relative. So A.

'Real world' answer: Because speed is relative, you can flip the motion and imagine it as the cube's platform pushing towards the portal. In this case the answer is B.

These spheres are the exact same color.

Attached: spheres.jpg (1072x648, 236K)

>muh dev said so
WHEN RECREATED IN GMOD, B HAPPENS
WHO CARES WHAT THE DEV SAYS WHEN YOU HAVE ACTUAL EMPIRICAL EVIDENCE PROVING HIM WRONG HE DOESN'T EVEN KNOW HIS OWN GAME

>being this wrong

it's black and blue every time I see it now, but it was honest to god white and gold the first time I saw it

>gmod
>modified physics of source engine
>portal mod probably messes them up

It's as correct as 1+1=2.
Greentext is not an argument.
I'm sorry that you're mentally challenged.

that hurts my eyes than makes me want to believe your argument. AHA YOU TRICKED ME

>Ingame answer: Portals don't move
Funny how this is posted every thread and also debunked every thread(portals move in portal 2).
It's interesting how a new person gets involved in this argument every single time it happens. For years

>jpg
I ain't clicking that shit

what the fuck, they are.

black and blue.
B fag

Honestly to this day I still think those who said 'white and gold' were just trolls. Even with the lighting, the blue part still looks blue

The only time portals move in 2 is with the laser beams, right? You can't actually use them. I imagine if a future game featured moving portals as an actual mechanic instead of what basically amounted to a cutscene, we'd probably see B play out and the portals would probably check for motion and transfer the speed to the object.

Anyone who is not a true brainlet understands that the root of the confusion is in the concept of having a moving portal, which actually makes no sense.

The first stage is denial.

>we did the experiment in changed conditions and our wished result happened
seems trustworthy

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No they're not.

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20 percent.

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>it works like A in the game's universe
youtu.be/_9_2AWUcZfE

Attached: Thinking_sun.gif (480x264, 1.54M)

WHAT DID GABEN RESPOND WITH?

You do realize how bicubic downscaling works, right?

he picked option 3

10 m/s relative to the viewer
7 m/s relative to the wall

>WHEN RECREATED IN GMOD, B HAPPENS
That recreation takes the speed of the object hitting the entry portal, relative to the entry portal, and moves then recreates the object with that speed at the exit portal. So it's not a portal, but a transporter/teleporter.
Which is really where all the confusion comes from in the first place. A portal is a worm hole, just a door way between 2 points, it's not a transporter that takes the incoming information of an object and transfers it to another location.

A = Portal
B = Teleportation

>an original portal/2 dev is still working at valve
this is surprising, i'd have thought they've let off all the people who actually make games

You are on flat-earther's level of denial b-fag.

p of no crits at all is 0.8^5 = 0.32768
so p of at least one is 1 - 0.32768 = 0.67232
so roughly 67%

A developer is to the game akin to a god.
So Bfags trust their mental gymnastics more than the revelation of a god.

1-0.8^5=67.232%

How’s that?

>Another thread where Yea Forums shows their complete misunderstanding of even basic freshman level relativity
Kimochi warui

This shit is old and honestly is veering into General thread territory

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Oh but they are

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You seem to have the right idea but I think you messed up your math slightly. The box is initially moving at 10 m/s relative to the wall — add the wall's 3 m/s to the box's 7 m/s. So if its final speed relative to the wall is unchanged at the end, it should end up moving to the right 10 m/s faster than the wall, which means 13 m/s relative to the viewer.

If game devs are gods, then why are their products flawed?

13 m/s

Neither the pillar or the box gain momentum
Space is warped to "teleport" the pillar every instant through the portals
It'd be like how a warp drive would work by pulling on the fabric of space to technically move a spaceship at FTL speeds
It's not the object moving but space around it
All of the momentum is being imparted onto space itself but our monkey brains can't wrap themselves around it so we get frustrated and want to kill it
At least I do

because they chose it to be so or didnt care enough

>valve programmer doesn't understand how relative speeds work

All these proves is that Valve employees are retarded.

Occam's razor says the simplest explanation — that portals just don't conserve momentum in the first place — is the more likely explanation than the mind-scrambling speculation about the warping of space.

>developers don't understand basic relativity
It isn't A or B.

It can NEVER be A. It's either B or the box just collapses on blue.
If the box does exit the portal it does so at speed and so it must continue travelling at that speed.

If they didn't care enough, then what's stopping them from not caring enough to deliver the correct answer? If they chose to create something flawed, then what's stopping them from choosing to create flawed answers?

>tfw I can't see black and blue unless it's one of those gifs/pics explaining the phenomenon

It's literal warping of space though
You're literally tearing space open OR creating new space
You're making space a new asshole

Small box shouldn't be affected by anything

lol

the real answer is neither
/thread
/all threads

Is no one gonna comment on the fact this actually supports B?
Momentum is conserved. That is the B argument. If this were to take place in space, the cube would go flying. Gravity is the only thing bringing it down.

>Downsampling

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Retard.

So you think "A" is correct in this one as well?

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>if nothing has gravity, things arent held down
i dont have a brainlet thats brainlet enough for you

>answer depends on how portal physics work.

yeah you dipshit that's the entire nature of the question in the first place. this is one of the most retarded answers I have ever seen for anything in my life. seriously. how dare fill society with such absolute soul sucking bullshit. get a thought in your tiny head you deluxe faggot

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I'll still be making these threads in 10 years buddy

>or the box just collapses on blue
>the box collapses on a hole
Uh, no.

You don't need momentum to move the cube you absolute fucking retard.

Are you retarded? The argument was always hoops vs. relativity. If the hoops theory is correct, the cube would stay still even in zero-g. But it isn't. Relative momentum is conserved, so it would go flying as in B.

How do you move something without moving yourself or it

God, I love the aesthetic of that image. The dots add that 90's dithering vibe to it.

Relativity dictates that the answer is neither.

We're literally talking about warped space
The momentum is conserved through space itself not the box

Attached: ItMoves.png (597x570, 40K)

Not an A-fag, but doesn't it still conserve momentum? It's just in a different direction.

Space is what has moved, not the box.

why would it move up? it would be stuck in portalspace

Explain.

I'm pretty sure that, if the cube moves (i.e. gains momentum) as a result of a collision, then it's because the object which collided with the cube had momentum which was transferred to the cube. That's literally, exactly, how collisions work.

A here Why would box gain speed from nothing? It doesn't interact with bix box B here

The portal is moving, though. Why do you people ignore this? The box is relatively still.

I'm seen some dumb mother fucking arguments in these threads, but that image is the single dumbest mother fucking argument ever. Worse than "muh hoops" worse than "muh fake laser portals."

How could anyone possibly think that it's B? Here's an experiment you can do for yourself. Put a coin on a table. Now get a plastic transparent cup and quickly slam it down (opening of the cup facing the table) onto the coin. Does the coin move? Only if you shake the table. If you just bring the cup down around the coin, the coin won't move. Why? Because the cup doesn't affect the coin's momentum (unless you transfer forces through the table, but even if you do, you're not going to send the coin shooting upwards, are you?).

Honestly how could anyone be so stupid as to think that B would ever be plausible?

Attached: brainlet.jpg (558x614, 18K)

The orange portal is moving, relative to it, the cube is still.
The blue portal is not moving, relative to it, the cube is moving.

Not relative to the blue portal. Relative to the blue portal, the box is moving at the same speed as the orange portal. It's a paradox.

Why does the entire space around the cube move? Why is the cube not a part of that space itself as it exits?

>Here's an experiment you can do for yourself.
Stopped reading there, I don't have a portal gun.

>It's just in a different direction.
Technically that wouldn't be conservation of momentum.

Momentum is a vector, so direction is a component of momentum. If you change the direction in which an object is moving, its momentum has been changed.

If two pool balls collide, they don't just go in random directions. The direction of each ball's momentum after collision must be such that the total momentum of the system is whatever it was initially.

still a

This is almost 1:1 what that one autist says. I'm guessing it's fake then.

I'm sick of these fucking threads.
strawpoll.me/18131300

Attached: THIS CANNOT CONTINUE.jpg (823x824, 112K)

here's an experiment you can't do yourself. move the entire universe except your cup upwards until the table collides with the cup. oh hey, your coin continues to move upwards.

Space flying past the cube is the same thing as the cube flying through space. All that is different is the point of reference.

The box is relatively still to the orange side of the portal, but moving relative to the blue side. That's why it continues to move past the blue portal, or you could say the space on the side of blue portal moves past the cube(it's the same thing really)

The cube has no momentum, it carries no energy. All the energy from the plate with the portal is transferred to the plate the cube is on, not the cube itself. It is objectively A, it has been confirmed A, stay btfo idiot.

Is there a scientific synonym for pure speed, then?

Portals are wormholes. They dont alter any properties, they conserve them. In the hypothetical a portal were to be forced unto an object, which is impossible already, and the object to stand still, the object sould stand still as it was "wormholed", meaning that at most the gravity would afect it post "agressive matter hoola hooping", as no solid object ever contacted eith the cube, altering it in any way.

Nobody ever has any counter to this as portals are, for all effects and purposes, just wormholes with snazzy colors. They cannot and ingame do not change any properties of anything that passes by them. B tards are B tards and forever will be B tards but that does not mean I cannot laugh at them. The oposite, Ill laugh even harder.

Sawcon my nuts, you niggers. Every time this is pointed out you sperg and ree and get mathematics from irl that arent relevant at all to try and justify something that is illogical at the core, both ingame and irl.

Attached: 1542276717076.jpg (538x498, 71K)

Hello.

and have the same answer, because they depict the same scenario in different frames of reference.. Either both are A, or both are B, because viewing a problem from a different frame of reference does not change the outcome. This is one of the most fundamental and basic concepts in physics.

>the box is moving
Nope, spacetime is.

We already have a strawpoll, retard.
OP is almost 1:1 of what every A-fag says. I'm guessing it's fake then.

Yeah, it's just speed. Typically "velocity" is what you call the vector, while "speed" is the scalar.

Conservation of speed is not an actual law of physics, but I guess you can say that it's what portals in the game do.

>We already have a strawpoll, retard.
With only two answers, when there's three possible answers to the question.

>OP is almost 1:1 of what every A-fag says
Except it isn't.

unbased nier poster

>Momentum, a function of mass and velocity, is conserved between portals. In layman's terms, speedy thing goes in, speedy thing comes out.
So she was wrong.

>They cannot and ingame do not change any properties of anything that passes by them.
So you're saying the part of the cube on the right has actually no momentum, even though it's moving away from the blue portal?

Attached: whatthen.png (926x236, 6K)

>This is one of the most fundamental and basic concepts in physics.
Then why is it so hard for you to understand?

>But if the orange portal continues to fall all the way down, the pillar will soon occupy the same space as the gray box. The gray box must be pushed out of the way, right? But that would put the gray box in motion. Not the fake motion of the pillar which actually has zero momentum — the gray box has been on the blue side the entire time and knows nothing about portals. It's just getting hit by a pillar. It needs to move. As a result of the pillar invading its space, the box moves, which means it has some momentum, implying a collision in which momentum was transferred to the gray box by the pillar, which can't be transferring momentum because it supposedly isn't allowed to have any.
What if once the pillar hits the box the portal stops moving?

>b-but mom, i-i have to choose A or B because the image asked me to!
i actually explained this in depth in the last thread. i just can't be bothered to do it again.

don't reply to me again you retard. you don't really even understand what i said.
>yeah you dipshit that's the entire nature of the question
if you understand that then you should also understand that the question is pointless because portals don't exist. the answer is ENTIRELY dependant on how the portal handles things.
both answers can be made correct if you just assume the portal to work one way or another. and both are equally nonsensical because and you cannot argue for the details in how they work, you have to assume it, because portals are fiction.

why would it stop moving?

I mean, technically, yeah.

Well, I guess it depends on how you look at it. I say that portals in the game do not appear to conserve momentum because portals can change the direction of a moving object, thereby changing its momentum. But as you're going through those portals yourself, you don't experience a change in direction, really. From your first-person perspective, it looks like you're going in a straight line, and the universe is suddenly rotated. You know what I mean? So you could also say "no, my direction didn't really change, so my momentum was conserved." But still, as an external observer, I saw that your motion seemed to change direction.

I guess that's where things start getting paradox-ish.

You must be baiting

Not him but stop thinking of it as a cube going through and appearing from a hole.

>With only two answers
Uhh, no, the third option is not to vote, if you think it's a paradox.

That's what it is though

I'm sorry that you're having trouble understanding this, but and have the same answer, and is correct.

If you want to reply with a well-reasoned argument that goes beyond "hurr durr physics is wrong" then I'll try to explain how you're mistaken, but otherwise, I feel disinclined to spend any more time holding your hand through this. I can't force you to learn.

Nigga, u dumb

B is impossible because of how the test is conducted.
If the cube was stationary floating in the air and the portal keeps going after the cube is in, the cube would fly after going through it because of all the space and air that the entry portal is taking in.

No it isn't. It's space moving around a cube.

Why do you think it's bait? You don't know what a frame of reference is?

In my opinion B fits your argument more than A. If the portal really just conserves the objects properties, than the cube shouldn't go past the the portal at all.

And if it does, than it would contradict what you are saying because how does this doorway identify and analyze matter as discrete objects, create them on the other end and then apply their initial properties once the portal arbitrarily recognizes the end point of the object. A as an answer doesn't at like a portal at all, more like a 3d printer than a door way

Then the entire poll is just a gauge to see how many people are stupid enough to answer? A clever trick.

salty bfag jannies

bfags on suicide watch holy shit!!

Same shit

>another non-argument
Okay sweetie.

See . The next stage is anger.

>sweetie
You're the only one that sounds angry, bub.

It isn't. It's the difference between walking through a hole and having the hole go around you.

blue/gold, Bfag

it was always obvious that it was A
but I thought moving portals were impossible to exist

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Wait a minute you're starting to convince me, I've been a Bfag for 10 years what is this

why doesnt somebody just test this out in the game?

what

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>go through hole
>move away from hole with whatever my walking speed is
>hole moves around me
>move away from hole whatever hole's speed is
Cube still moving away from whatever surface the blue portal is on with 10m/s.

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Sorry, I didn't know "sweetie" was an "I'm really mad" meme. I'm just trying to keep myself entertained while I wait for you to present an actual argument for me to debunk. So far you've just been going "durr no u wrong" in the face of irrefutable facts and basic physics concepts.

B can't work for 2 reasons.
1. If the cube is at rest when it enters the orange side of the portal but moving as it exits the blue side of the portal it has instantly changed velocities, which implies infinite acceleration, which in turn requires infinite force, which would probably just destroy the cube if not the entire universe.
2. If the cube is at rest and you moved the orange portal halfway over it and then stopped, half of the cube would come out of the blue portal and move away from it, so one end of the cube would be moving while the other one was stationary, therefore either
A. Cutting the cube in half.
B. Instantly pulling the entire cube through as soon as it touched the orange portal.
C. Preventing the cube from moving through the portal at all if there wasn't enough force to cause either A or B.
This may not seem like much of an issue until you think of it in terms of calculus and divide the cube's movement through the portal into infinitesimally small steps and realize that moving any matter through a portal would either
a. Cut the matter into thin slices, making it useless.
b. Instantly suck in any matter that touches one of the portals including air, effectively creating something like a vacuum cleaner as soon as the portals are activated.
c. Make the portals impassable.

I realize A is not without problems either but the way the orange portal's velocity doesn't affect the cube's velocity can at least be explained by evoking the "portals warp space in a way that's hard to understand" explanation that one of the developers suggested .

Make this in a Mastering Physics format.

Somebody did, the game cannot compute because it was never designed for such a thing.

>but I thought moving portals were impossible to exist
Yeah.

>the answer is ENTIRELY dependant on how the portal handles things.

yeah that's what I fucking said. there are literally two (2) games where we can play with portals. we do know how they work. that game is the authority on how they work and we can run experiments and shit. they are fiction, but that fiction is fully fleshed out. your response saying "it depends on how they work" is still full retard.

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These threads make my head hurt but I can't stop reading them

Where's that strawpoll?

>not understanding the difference between two figures acting relative to each other in a stationary 3-Dimensional space and universal warping

OH NO NO NO NO NO
B-NIGGERS ABSOLUTELY DESTROYED, HOW WILL THEY EVER RECOVER?

>Cube still moving away
No, the cube isn't moving the space around it is.
That's the problem with your copy pasta analysis in this thread, basically you aren't thinking with portals.

that's why powerpoint exists

Wait, Gaben still answers emails?

I have a question, if the test is conducted in a zero-g environment, would the cube continue to move away from the portal after entry or will it just stay in place right on top of the portal exit?

Looks like he just forwarded it.

>still not answering why cube has different vector upon exiting portal

Read the OP. In the context of the game itself, as in at a codebase level, a portal is a tool which translates an object between discrete points. An object only has “momentum” in the context of the non-portalized environment. When they pass through a portal they are moved to a new space and orientation, that is all.

A moving portal changes the location of entry and/or exit but it isn’t moving the real world, so it isn’t going to change the magnitude of the velocity vector that an object has relative to the real world.

On top of the exit portal.

Lazy fucker. Or maybe he's sitting on the fence.

>think of it in terms of calculus
Have you never taken a calculus or physics course in your life?
Your argument is Zeno's Paradox tier.

>That one scene with the neurotoxins isn't a functional portal, but a setpiece that generates a laser.
mind blown

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holy shit you fucking autist
when people say portals conserve momentum they obviously mean speed
portals change the direction of objects but who cares

that's sad :[

That question is answered here: If you don't understand the answer, then you don't understand what a frame of reference is, and you should read a book.

7m/s
or 4m/s relative to the wall

but there isn't any motion user

thats not the same as conserving momentum you fucking brainlet

Okay, the "durr I conserved momentum" text was a bit of a joke there. I know the intended meaning of "speedy thing goes in, speedy thing comes out".

But I think you're missing the point of the image, which is that if the answer to is B then the answer to is B, because they represent the same scenario viewed from different frames of reference, and changing the frame of reference does not change the outcome.

A has always been the obvious answer. Why would anyone think B? I don't understand the logic behind it.

>here's an experiment you can't do yourself. move the entire universe except your cup upwards until the table collides with the cup.
But that's literally what he's already doing by slamming the cup down, relatively speaking

Sorry.

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Why would the wall add speed? This is stupidity of B-fags.

So, right. Imagine this. Rather than a metal box, there's a jelly on the platform. The jelly would stretch and squash when force is applied to it. A normal platform moving would squash the jelly downwards. Now imagine scenario B. Would the squash jelly still be a mm inside the portal if momentum was instantly transfered to it? It won't as the jelly would also be squashed a mm outside the portal and it would suddenly have that force not apply to it again? Is that how it works?

1. No, the change in energy comes potential energy, Due to the objects frame of reference changing.
2.Again, no. The cube is not moving due to accelerattion, momentum, whatever. It appears to be moving because it's frame of reference is moving around it. If you stopped halfway it would just stop and possibly falling to the other side due to gravity. In other words B is not the cube flying out the other side, it is the other side flying past the cube.

1 - 1/5 * 1/5 * 1/5 * 1/5 * 1/5
so it's over 99%

He thinks that appearing at a speed is the same as moving at a speed. In other words he thinks that going 80mph into a stationary object means that the stationary object is moving at 80mph and not the person.

See .

Then explain how the cube appears on the blue portal's side without part of it moving away from the portal.

Has this ever been reproduced in the game to get rid of the question once and for all ?

See

>Simply put, we added 3m/s to all values just because. :D
What ruins these threads is retards like you baiting

For people who don't understand relativity, these 2 things are the same. So A-fags, please tell me what happens here. Does the cube shoot out the back of the blue portal? Does the cube resist going through the orange? So it will just bounce off?

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Game wasn't designed with it in mind so it usually doesn't do anything.

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In reference to the moving wall, +3m/s during entry and -3m/s after exit, the cube would still be moving at 7m/s, nothing changes for the cube itself.

Did you really just reply to a post with a question that it answers?

>takes speed from big boxs and applies it to small box to "make it easier", but in fact just moves from one situation to another
Repeat after me: big box doesn't affect small box in any way, small box goes through portal and keeps its speed, its vector translates according to portal placement.

It rests on top of the blue one you idiot.

The same thing is happening in B, what that guy is asking, is why does space arbitrarily stop moving past the cube in answer A?

thanks doc

the portals are doorways so the cube would go through the blue portal. i'm confused by your usage of arrows, are you saying the blue portal is moving at 15 m/s and then 5 m/s in the second image, or are you referring to the momentum of the box

Not entirely. Momentum is conserved in respect to the portals and only the portals. If an object enters orange portal at a given angle and speed then it exits the blue portal at the same angle and speed respective to the portals. What she says is true in that sense. Cue up A-tards reciting conservation of energy and momentum without understanding what's actually happening.

It’s moving because it is being translated, not because it has velocity.

>but translating an object imparts velocity
You say that because it’s the only way the laws of physics as we know them operate. Our current understanding of space does not permit an object to be moved through space without having velocity/momentum. Our current understanding of space ALSO does not permit tunnels of non-contiguous space. i.e. Portals.

As the portal moves over the box, the box is being RELOCATED while remaining STATIONARY.

The answer is obviously 7m/s, but it makes me wonder what would happen if the portals were moving at a speed higher than that of the object itself

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What ruins these threads is retards like you who pretend to know all about physics but never heard of Galilean invariance or inertial frames of reference.

So it doesn't fly away ? Why isn't it the answer ?
T. Not an "a" or "b" fag I just don't get all of the drama.

It doesn't explain anything. You're saying I wouldn't see the Cube coming out of the portal, i.e. it moving away from the portal. Then what would I see?

based Afags continue to destroy Bfags

Because the entry portal stops moving after the cube is in, if the portal keeps moving after the cube is in we'll see the platform through the portal.

Relative to the orange the cube is moving 10 m/s towards the orange, the blue is moving 15 m/s in the same direction as the cube.
The arrows next to the portals are indicating the movement of the portal

Is the speed of the cube constant? Is the portal constantly moving? What would happen is that the portal would still 15 and the box would still be 10 going upwards. It would be a loop of box entering orange portal and went out of portal blue again and again.

>However, the box's velocity has changed
no it hasn't.
Do you unironically not understand the "pen through folded paper" analogy?
The box continues in a straight line on an impossible vector.
As is said in the image, there is no force applied other than the effect of the portal, which only changes position

I don't know how you can possibly act like that makes more sense than the idea that a cubes speed relative to orange is converted to speed relative to blue when it leaves.

retard

It is the answer.
>T. Not an "a" or "b" fag I just don't get all of the drama.
If you really really wanna know: no one actually thinks it's B, it's all just funposting to fuck with people who think they're really smart for figuring out an elementary physics problem.

Simple answer is that portals don't impart momentum regardless of frame of reference so if whatever goes in isn't shot in to the portal it's not going to fly out.

user, please try to comprehend basic facts.

These two scenarios are the same thing, in two different frames of reference. A problem can be solved in any frame of reference and the answer will be the same. If you've solved the problem in one frame of reference then you've solved it in all of them. I'm not moving "from one situation to another" at all. I'm changing the frame of reference which is something you would understand if you learned anything in introductory physics.

If freely choosing a convenient frame of reference is not allowed, then you should be factoring the velocity of the Earth into every problem you solve.

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The box is fucking emerging from blue as time passes. It is being displaced over time. It is literally moving as it exits blue.

>b fags can't get anything correct
what a surprise

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>You're saying I wouldn't see the Cube coming out of the portal
Which no one said.
You like putting words in people's mouths don't you.

It get's stuck in the portal. Idiots try to argue with real physics
what in the end is a fucking hole in a videogame

and are objectively correct and it's hilarious how much butthurt they're causing.

I didn't know there were THIS MANY people on Yea Forums who don't know what a frame of reference is.

You say that but there is one user who genuinely believes it's A.

Switch the speeds and watch A-fags have a fit.

Because orange portal isn't moving and will never move. Only the blue portal is moving.