Question: A construction worker throws a broken wrench (mass 0.450 kg) from a construction platform that is 20.0 m above the ground. The wrench has a

A construction worker throws a broken wrench (mass 0.450 kg) from a construction platform that is 20.0 m above the ground. The wrench has a maximum speed of 22.0 m/s just before it hits the ground, find the speed at which the construction worker threw the hammer.

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