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Issac Newton's 3rd Law of Motion. To every action there is an equal and opposite reaction.

A working rocket ejects a small amount of exaust at a very high velocity. The "equal and opposite reaction" is that the rocket moves in the opposite direction although at less speed than the exaust because the rocket "weighs" more.

Yes, it is "rocket science" but it is fairly painless.

I feel i should add that this answer could be "marked wrong" for many reasons but it is the best i can do without dragging Calculus and Mechanics into it.

Most vocational education colleges provide courses in "O Level" Physics that will explain this and many other wonderful things.

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12y ago

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