Question

a stone on ground has zero energy but the same stone has energy when it is lifted at a height? why?​

Answer 1

Explanation:

It has zero energy “relative to the ground level.” Since energy means the ability to do work, this means it can do zero work in getting to the ground level. ... Thus, when held above ground level, the stone has energy.

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Answer 2

Explanation:

since energy means capacity to do work.when stone is in ground level, it has 0 work because it doesn't covered any distance but when stone lifted at a certain height , it covered a certain distance and work is done.Thus same stone has energy when it is lifted at a height .