question archive Sample Problem 4 A drop of mass 1 g falling from a height 1
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Sample Problem 4 A drop of mass 1 g falling from a height 1.00 km. It hits the ground with a speed of 50 ms. Worl- done by the gravitational force is (a) 50 J (b) 10 ) (c) 15 J (d) 20 J