>>718884045
There is no way to answer this because you are utterly failing from the start.
The cube isnt fucking moving, the platform isnt moving, the only thing moving is the piston containing the portal, which is moving at an unknown variable.
Portals do not actually exist you stupid nigger, but as they are shown in the game, you can place a portal on two walls and stand in the middle of each, nothing puts impetus on the object going through, it acts purely as a doorway, the only time you see objects increasing their velocity is when falling, not because the portals are somehow accelerating them, but because the object is falling without impediment and reaching its terminal velocity.
in other words, bfags are retarded and need to just stfu if they dont understand the question.