***Newton's Third Law of Motion States, "For every action force, there is an equal and opposite reaction force." This is how, as Mrs. Snook pointed out to me the other day, jet packs work in space.

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***In this picture it shows how when the gun forces the bullet forward, the gun also kicks back. This is and example of Newton's third Law.


***When a rocket goes into space, it pushes on the ground and this causes a reaction force to push back on the rocket.