>>519698Go to wikipedia and look up "momentum". It says there momentum is a VECTOR. If confused, look up "vector", they have many sciency little things there. So, if momentum is a vector, the cube in this picture has changed its momentum to the exact opposite of what it was. So momentum conservation does not work either.
Seriously, go to /sci/ with this shit.
>>519776No it is, if you do this in-game the cube retains its speed from when it fell into the bottom portal.