I wasn't exactly sure where to post this. 'Puzzles' seems like the best place.
First take a look at the picture. A moving platform with a portal is speeding downwards towards a stationary platform on which a cube is placed.
The exit portal is placed on a slope nearby.
What will happen when the moving portal (on platform) consumes the cube?
A - the cube will slide down the slope at the exit portal
B - the cube will be launched out of the exit portal at great speed