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A rubber ball is released from a height ...

A rubber ball is released from a height of 5 m above the floor. It bounces hack repeatedly. always rising to `(81)/(100)` of the height through which it falls. Find the average speed of the ball.
(Take `g=10 ms^(-2)`)

A

`2.50ms^(-1)`

B

`2.0ms^(-1)`

C

`3.50 ms^(-1)`

D

`3.0 ms^(-1)`

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