# A ball is projected vertically down with an initial velocity from a height of 20 m onto a horizontal floor. During the impact it loses 50% of its

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A ball is projected vertically down with an initial velocity from a height of 20 m onto a horizontal floor. During the impact it loses 50% of its energy and rebounds to the same height. The initial velocity of its projection is
A. 20ms^(-1)
B. 15ms^(-1)
C. 10ms^(-1)
D. 5ms^(-1)

## 1 Answer

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Correct Answer - A

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