When a stone of mass is dropped from the edge of a high cliff to the ground

PHYSICS · Single correct · CBSE · Physics · Work and Energy · Work and Energy

Problem

When a stone of mass mm is dropped from the edge of a 20 m20\,\text{m} high cliff to the ground, the change in its gravitational potential energy is (a) +mg×20 m+mg\times20\,\text{m} (b) −mg×10 m-mg\times10\,\text{m} (c) −mg×20 m-mg\times20\,\text{m} (d) 00

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