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Answer to Question #4162 in Atomic and Nuclear Physics for Andrea Watson

Question #4162
A 75kg astronaut in space against a 200 kg anvil. when the astronaut lets go of the anvil while pushing it what happens?
Expert's answer
Due to the Law of Momentum conservation:
mv = MV
75v = 200V, where v is the velocity of the astronaut, V is the velocity of anvil.

Thus the astronaut and anvil would move in the opposite directions and the ratio of their velocities would be v/V = 200/75 =8/3.

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