Question : A ball which is at rest is dropped from a height ℎ meter. As it bounces off the floor its speed is 80% of what it was just before touching the ground. The ball then rise to nearly a height
(A) 0.94 ℎ
(B) 0.80 ℎ
(C) 0.75 ℎ
(D) 0.64 ℎ
Answer : option (D)
Solution :

