Question

A 25 kg rock , is raised to the top of a hill 10 m high. What is the PE of the rock ?

Answer 1

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`Potential \: \: Energy =(mass) * (gravity \: acceleration) * (height) \\`

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If gravity acceleration is 10 :

`PE = 25 * 10 * 10`

`PE = 2500`

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If gravity acceleration is 9.8 :

`PE = 25 * 9.8 * 10`

`PE = 25 * 98`

`PE = 2450`

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