Stop fighting about trannies and orbiting men pretending to be women for 5 seconds and answer this question

>anyone who disagrees has either not played the game
Portals weren't on moving surfaces in the game, proves you didn't play them. Dumb animeposter

B
Think about how it would look from the cube's perspective, imagine you were standing on the platform and looking up into the portal. What would you see? It would look as though the world on the other side of the portal was rushing towards you, even though in reality the world is remaining motionless. It is you who is moving

B. Same speed at which it was forced to cross the portal

Let's assume the portal universe has the same physics as our own besides whatever allows portals to exist.

A. First portal slams into the floor or whatever that thing is, moment isn't transfered to the cube. And since the cube doesn't have any moment on its own, A.

B = brainlet

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this is a moot point, anyway
portals cannot exist, they imply contradictory things

B with either momentum model

relative to portals: (correct model)
B obviously

relative to space:
half way through, the cube is going fast on the blue side. what makes it suddenly stop once it's all the way through? A is impossible. it's still B

inb4 >muh strict interpretation of classical Newtonian laws

The answer is always A because the portal is basically just an empty hole. Nothing actually touches the cube to transfer momentum.
The moving piston can't transfer any momentum to the cube because it never touches it, the cube just slides through the hole onto the floor.

You do realize that this interaction is in the first portal game (with you in place of the cube, and a piston coming down with a portal on the end). You use it to launch yourself, so in game canon, it would be B.

People who picked A never finished the first Portal because it was "too hard".

A. Suppose B is correct. Create two portals distant from each other and make them slowly moving closer. Congratulations, you have a machine capable of generating infinite energy which should be impossible.

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That's retarded though, how does the portal transfer momentum when all it is is an empty hole? The portal itself has no momentum to give to the cube, nothing comes in contact with the cube in this scenario to transfer any momentum to it.

>the cube is going fast on the blue side.
The cube isn't moving at all though.

That's how the "physics" in the Portal game world work. Having to figure out the differences from the real world is part of the game.

A portal is not an empty hole, theres an entire world on the other side
Portals couldve already been used to generate infinite energy, and youre retarded for not seeing that

>creating infinite energy machines with portals is impossible
what is floor portal and ceiling portal loop, an infinite speed machine often used in the game

All motion is relative
The cube is being transferred into a world that the cube was infact moving relatively towards

when you hit something does is the force applied to the object or not you FUCKING retards?

cube never moves on the blue/diagonal/out portal side? how did it get there?

>theres an entire world on the other side
Both portals show the same world. Forces acted upon objects would be the same from both portal's perspectives

A. Imagine a hypothetical where instead of a portal it's just an empty chamber on the piston.

That's not how portals work, there's no momentum transferred to the cube when the portal is lowered onto it.

The cube is not moving at all, what would make it fly off into space if there's no momentum being transferred to it?
Going through the orange portal does not transfer momentum because the orange portal and the moving piston are two separate objects.

Gravity, if the blue portal is angled like that and the orange portal goes over it, it just falls due to normal gravity, it can't fly off into space.

It would be A

Imagine you took a hula hoop and slammed it down around the cube. Would the cube move? No.

The portals allow the moving object to maintain it's momentum because they act as a 2D cut into reality, but the cube isn't moving.

Only if the platform the cube was on was moving would the cube fly away, but the orange portal is just like a hula hoop, it's just a hole in reality.

The cube has no momentum, the answer is A.

>Forced acted upon an object would be the same from both portals perspectives
Completely untrue if one is moving

A because the block itself has no momentum ergo the block would simply slide down the ramp in the acceleration vector of gravity sin of the angle of the ramp

B implies the portal transfers momentum

Except the moving portal platform would impart no force on to the cube.

So where would the momentum of the moving piston go to preserve momentum and thus conserve energy? Into the stationary platform. The stationary platform would absorb the force of the moving platform. The portals impart no force to the objects passing through them.

Motion is relative in relation to the observer but not the object in a closed system
The cube was not moving therefore it will not move despite relativism placing the motion of the collision at speed X but regardless one of the objects is not moving

This is simple Einstein

A because the portal is moving and not the cube

Imagine that instead of a portal there was just a normal run of the mill hole in the moving platform. So the platform comes crashing down onto the stationary platform and the cube is where the hole is so nothing touches it. The moving platform would impart it's energy into the stationary platform and totally miss the cube. The momentum is conserved through the collision of the two platforms. The cube may jump or jitter a bit just from the impact around it but it would in no way go flying off the platform through the hole.

The portals are just fancy holes.

>Completely untrue if one is moving
Explain?

I'm talking about how this shit would have to work in a proper model of a physical universe, not in an autism simulator that can bend its own rules to make the player feel good.

Whoever says B has never played Portal.

That hypothetical gives evidence to B
Lets discuss what happens before the piston hits the floor:
>When the cube enters the piston, the interior of the piston is moving fast relative to the cube and the cube is moving fast relative to the interior of the piston.
Lets convert this to the portal question:
>When the cube enters the portal, the room with the blue portal is moving fast relative to the cube and the cube is moving fast relative to the interior of the piston.
Note the flaw with the model once the cube fully enters the piston:
>there is a massive acceleration (from moving down quickly to full stop) on the piston interior once the cube has completely entered the piston interior
>there is no acceleration on the blue portal room once the cube has entered the blue portal room
So lets continue this thought experiment with portals
>When the cube enters the portal, the room with the blue portal is moving fast relative to the cube and the cube is moving fast relative to the interior of the piston.
>no additional forces
>the room with the blue portal is moving fast relative to the cube and the cube is moving fast relative to the interior of the piston.
its B.

You skipped over the part where the cube isnt moving and instead transferred the momentum of the piston to it

Your proposition also incorrectly defines general relativity as motion being a product of the relation of motion of a system rather than the relation of an object around its system
While measurements can be taken from any angle you choose the absolute function of relativity on the object is in line with Newtonian physics

For brainlets who don't get it

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But the cube isn't moving at all. The "piston interior" is just an empty hole, like you cut a circle in a piece of paper, there's nothing to transfer any momentum to make the cube fly off.
The "room with the blue portal" isn't moving either, the two portals are like the circle cut into a piece of paper or a hoolahoop, the interior of it is basically just an open window.
It doesn't matter how fast the piston is moving, it can't transfer any momentum to the cube at all.

>the entire cube is moving quickly relative to the orange portal
>it starts moving through the portal
>the portion of the cube on the orange side is moving quickly relative to the orange portal
>the portion of the cube on the blue side moves with the portion of the cube on the orange side; its a single solid object
>the portion of the cube on the blue side is moving quickly relative to the blue portal
>the portion of the cube on the blue side continually lowers and the portion of the cube on the orange side continually grows
>the entire cube is now on the blue side
>the entire cube is now moving quickly relative to the blue portal

this works with any momentum model you want. where is the flaw of this ? dont fukin hula hoop me debunked this
where is the flaw
all A posters are bait

Thank you, smart user.

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What is even going on this picture?

(assuming nothing is near the speed of light)
object C is moving relative to object D
object D is moving relative to object C
>this is wrong because one of the objects is a "system"

This breaks the laws of motion anyway. The block travels through the blue portal with zero momentum

Have you ever played Portal?

Playing by the Source engine rules, it's A

Scenario B is wrong.

>A only looks passable because particles move rapidly out of the diagonal portal
how do people still believe this A shit

They played Portal.

As an actual engineer, I can say for certain that 80% of you are jackasses that think you know physics because you got a 3 on an ap physics exam. What happens here is that the cube doesn't move until the portal begins to move it, and the tldr answer is A. However this does create an interesting problem, since the coefficients of frictions are calculated for a flat surface despite the inclined plane forces of gravity acting on it (so long as the cube is above the blue portal, when it slides off far enough it goes back to normal). The only actual force on the cube is gravity, and what's really interesting is what would happen to the cube halfway through the portal. I don't know the slope of the blue portals surface, nor do I know it's static friction, but let's say that half the weight of the cube on that slope is enough to make the whole thing slide. If half the cube went through the portal, the top half doesn't gain momentum, it just changes position in space time. However, the effect of gravity on the top half would make the entire cube slide simultaneously, which I think is kind of neat. The portal doesn't eject things, it simply maintains momentum, so the cube would act only under the (weird but still) force of gravity in this scenario. If the platform the cube was on had been moving up towards the orange portal, then yes it would fly away, but in this case, it's A. Also gonna take a shot in the dark and say check dubs

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You're right, but no dubs for you.

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Actual physicists convinced me it would be B because from blue portal's perspective there is no difference between moving through the portal or getting moved through the portal; it has a velocity

>friction shit
>[with no momentum] it just changes position in space time
holy shitting kek

>total momentum of a system is maintained after you introduce moving portals
almost as bad as
>total energy of a system is maintained after you introduce portals at different heights

t. 5 on AP physics exam

You're actually dumb

Objects travelling through a portal retain their momentum.

The cube is stationary, it has 0 momentum.

A. The cube has no momentum. The portal is static and the momentum of the surface the portal is affixed to does not change the static nature of the portal, nor does it accelerate objects that pass through it.

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Your "actual physicists" haven't played the game. In no circumstance does a portal ever increase the velocity of one traveling through it, no matter what it's on.

What does this all mean is this like some advanced physics lmao :D

You nerds r awsum!! :3

Bumpin bumpin origami bumpin

Correct, an accelerating portal entrance provides no momentum for the object entering the portal. Velocity of object out of exit portal is directly correlated with the force enacted on it from outside the entrance portal.

If the velocity of the cube is zero then how does it exit the portal?

it's a, stop this shit. if the platform the cube was on was the one moving it'd be b, but it isn't.

Haha doing some big boy thinkies today huh sweetie?

Odd how you accuse him of not playing the game, whereas moving portals do exist in the game. Before Wheatley goes nuts, you cut some neurotoxin pipes via a moving portal that has a laser passing through it.

Retard.

Pretty sure it is neither
As the moving portal doesn't impart any momentum to the cube, the cube cannot exit the second portal.
Instead as the cube is fixed relative to its environment the portal cannot be pushed further than the surface of the cube. This problem is made worse by noticing that it also can't impart momentum on air and dust in front of the portal either. Basically it looks like portals might not even be possible unless they can impart momentum on things that cross them, in which case B is the only plausible answer
>No it must be A because momentum
What accelerated the cube out of the second portal exit then?

Ok listen up retards, the answer is B. (t. physics student)

Consider the following; you don't see the orange portal. You only see the blue portal. Suddenly this box starts coming out of this blue portal at a very fast speed.
Do you honestly think it's going to stop once it fully emerges? You'd need an external force to stop the box, because as it's coming out from the blue portal it DOES have a non-zero velocity. The object is MOVING as it's coming out of the portal, and yall niggas know that an object will keep moving unless a new force it applied.

Keep in mind that portals aren't real and they act weird as objects pass through them. For example; 2 portals on the wall and you toss a ball to one of them. The portals will totally reverse the momentum of the ball without applying an impulse, which is nonsensical.
Likewise it doesn't matter that the box initially has a velocity of 0. What matters is that it does have velocity as it's coming out of the blue portal.

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If you think it's B, then sadly you are completely and irredeemably retarded and should get euthanized immediately.

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Explain how A is even possible then retard
It needs to be moving to exit the second portal. It's also going to be exiting the portal at the rate it crossed into the entrance. It therefore must move relative to its environment in order to come out of the portal.

That's because portals never move in the game except only once. And in that particular instance you're not allowed to walk through the portal.
So your point is invalid.

Momentum isn't conserved through portals. Portals change momentum without applying an impulse.

>49168937
Poorest bait yet.

Why are you telling me this?
t. >49168891

Quoting you to 49168937 rather than telling you
I'm struggling to see how any possibility other than B would allow for portals to even exist

>cube isn't moving
>is now at an angle
What is there to explain? Why would it shoot off?

This question always makes me think of that one old movie where a guy is standing and a house falls around him.

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Portals go away when they are under acceleration, have you zoomers never played the game?

A relies on some force suddenly stopping the cube from moving as can be seen in
Which means crossing the portal would result in the cube being accelerated infinitely, requiring infinite force

Yall are all dumb, its gonna be neither. The portal will disappear once the piston its moves, have you all ever played the game?

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I would imagine it's A. Pushing an object through a portal is like pushing an object through a hole, except one side of the hole is in a different location through the other.
So if the object flies into one side of the hole, it will fly out of the other side. But if the hole is moving, and not the object, there would be no reason for the object to come flying out of the other side.

It's like moving a hula-hoop around a basketball on a pedestal.

It doesn't matter because portals don't exist. Nothing matters, for that matter. We're all just sitting on a little painted marble spinning senseless through an endless black sky. Why are we wasting our time arguing about this stupid petty shit?

fun fact: everything in that stunt is 100% real. everyone warned him against doing it because there was a huge likelihood he would've died had he not been standing in that exact spot, but he was so stubborn that he could accurately eyeball where he should be standing that he did it anyway.

He knows whats right

Gotta love how this meme never fails to absolutely rump rustle physics graduates.
The portals work as a conventional wormhole is understood to function. That is to say, the folding of space itself to unite two coordinates in space. The answer is A.
PS: In case you are confused, the reason that the cube "plops" out is due to gravity's pull.

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>the reason that the cube "plops" out is due to gravity's pull.
I can't even tell if this is bait or not. It's so stupidly written but coherent just enough that some retard may have written it unironically

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>words words words
no arguments, no refutations lmao you know he is right and your just mad now

I already laid my case in another reply faggot. Besides, the post I replied to doesn't answer anything.

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A and for fucks sake anyone who says B is a fucking retard or is trolling.

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>he didn't realize that it was the test chamber fizzling the portals this entire time
at the very end of portal 2, the portal to the moon disappears, you didn't go through a fizzler, glados's chamber just got rid of the portal.
when you are outside the chambers, you can have moving portals (nurotoxin factory laser level). when you are inside the chambers, the moving platforms the portals are on fizzle the portal so test subjects never have to have this thread.
portals can move (and it's B)

all A posters have to be bait.
see

A
Energy is transferred from the falling thing to the black thing, not the cube, because the portal is an empty space and the cube never actually collides with the falling thing
In a vacuum maybe B but gravity and stuff

>drops hoola hoop from over my head and it hits the ground
>mfw I fly into space
B posters have to be fucking bait.
Imagine the portal as an infinitely flat ring, but it has 2 dimensions, so if you drop a ring on your finger does your finger get fucking ripped off because "in relation to the ring your finger is moving fast"?

Oh wait no that would mean B
But I don't think it'd shoot out like that. It'd arc or something

>be hoop
>human enters me with relative velocity of V
>human exits me with relative velocity of V

>be portal
>box enters me with relative velocity of V
>box exists me with relative velocity of zero

Proof that A posters are mentally retarded.