Free-Flying Rocket Box
A box of gas floating in empty space. There is no air, no ground, nothing to push against. The camera holds still. Open the door and see where the box goes.
gas in the tank
exhaust
how hard the gas pushes on each end
Momentum
← leftward · rightward →
Rocketbox + gas still inside
0
Exhaustgas that has left
0
Total
Stays at zero. Rocket and exhaust push each other apart; nothing else is involved.
0.0