what is the 2nd case of free fall
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Newtonian physics, free fall is any motion of a body where gravity is the only forceacting upon it. In the context of general relativity, where gravitation is reduced to a space-time curvature, a body in free fall has no force acting on it.
For other uses, see Free fall (disambiguation
For other uses, see Free fall (disambiguation
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the answer is Newton's law
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