Question #287577

A coin is placed at the top of a two-story building, having a potential energy of 20 J. If it has a mass of 2.50 grams, what would be its velocity upon hitting the ground?


1
Expert's answer
2022-01-14T09:45:33-0500

The velocity upon hitting the ground will be


v=2E/m=2⋅20/0.0025=126 m/s.v=\sqrt{2E/m}=\sqrt{2·20/0.0025}=126\text{ m/s}.


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