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QUESTION
A hiker uses a large, 10-kg hammer to drive a 0.75-kg stake into the ground. In doing so, he allows the hammer to fall from a height of 1.25 m before striking the stake. If the strike drives the stake
A hiker uses a large, 10-kg hammer to drive a 0.75-kg stake into the ground. In doing so, he allows the hammer to fall from a height of 1.25 m before striking the stake. If the strike drives the stake 10 cm into the ground, for how much time is the stake in motion?
