A number ball is released from a height of \( 5 \mathrm{~m} \) P above the floor. It bounces bac...

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A number ball is released from a height of \( 5 \mathrm{~m} \)
P above the floor. It bounces back repeatedly, always

W rising to \( (81 / 100) \) of the height through which it falls. Find the average speed of the ball. (Take \( g=10 \mathrm{~ms}^{-2} \) )
(A) \( 3.0 \mathrm{~ms}^{-1} \)
(B) \( 3.50 \mathrm{~ms}^{-1} \)
(C) \( 2.0 \mathrm{~ms}^{-1} \)
(D) \( 2.50 \mathrm{~ms}^{-1} \)
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