MHT CET Physics question
A ball falls in the downward direction from height 'h' with initial velocity V. It collides with ground, loses th of energy and comes back to the same height. The initial velocity 'V' is (g = acceleration due to gravity) [MHT-CET 2020]
Answer: (D)
Solution
Energy just before impact is ; one quarter of it remains and must equal to reach height
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