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A stone of mass 20 g falling from height of 2 km hits the ground with a speed of 200 ms–1. The work done by the gravitational force is Options: 100 J 200 J 300J 400J |
| Answer» A stone of mass 20 g falling from height of 2 km hits the ground with a speed of 200 ms–1. The work done by the gravitational force is Options: 100 J 200 J 300J 400J | |