Question

Name the principal on which rocket work?

Answer 1

it is work on Newton's. third law

every action has a opposite reaction based on this rocket flying in to sky and to galaxy

Answer 2

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Rockets work at the principal of Newton's Third law of motion

Newton's third law of motion = Every action have equal and opposite reaction

we can also say that it works at the principal of Law of Conservation of Momentum.

In Rocket :-

The equal and opposite reaction force of downward going gases pushes rocket upwards with great speed.