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OpenStudy (anonymous):
what is the potential energy of a 20 kg rock perched at the top of a cliff with a height of 100 meters?
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OpenStudy (anonymous):
Potential energy is the energy of a mass due its position. Use the formula mgh, where m is the mass, g is the acceleration of gravity and h is the vertical height. Multiplying everything, you will get the potential energy. Can you work it out?
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