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 | What causes the rocket to move up? | |
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| According to Newton's Second Law... | |
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| What about the third law? | |
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| When an object is acted on by an outside force the strength of the force equals the mass of the object times the resulting acceleration. | |
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| Newton's third law means that whenever there is a force acting upon an object the same object is applying force to another or the same object. | |
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