Question

A ball is dropped from height 81m on a floor of e=2/3.The total distance covered by the ball just before the third hit is

Answer 1

Dear student,

When hits first time-81 m
When bounced up-81*2/3=54 m
When hits second time-54 m
When bounced up second time-54*2/3=36 m
When hits third time-36 m
total distance=81+54+54+36+36=261 m

Regards