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Momentum

A ball of mas...

Question

A ball of mass 10 g falls on a floor vertically from a height of 10 m. If it bounces to a height of 7.5 m, then energy lost on striking the floor is (Assume no energy loss by air-resistance and take $g = 10 {m / s}^{2}$ )

A

0.25 J

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B

0.75 J

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C

0.95 J

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D

1.25 J

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Solution

The correct option is A 0.25 J

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