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3 30 J 131 A body of mass 5 kg at rest is dropped from...

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3 30 J 131 A body of mass 5 kg at rest is dropped from the top of a 20 m tower If the body reaches the ground at 10 m s then work done by air resistance is 1 750 J 3 750 J 2 250 J 4 250 J

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