Physics, Astronomy & Cosmology / Re: Do rockets work due to conservation of momentum theory or imbalanced forces?« on: 07/02/2020 12:21:01 »
So a person throwing a ball is equivalent of gas leaving a rocket due to pressure gradient?
Insofar as momentum is conserved by splitting kinetic energy between masses that are accelerating away from each other in each case? yes!
So if a hot air balloon starts to lift off from the ground, does it push off the ground first?