Question

A tennis ball is dropped from the hand, falls to the ground and bounces back at half the speed with which it hits the ground. The coefficient of
restitution is
(A) 1/root2
(B) 1/2
(C) 2
(D) 1/4​

Answer 1

Answer:

B

Explanation:

They said half the speed which is 0.5

Means if the speed of the ball when it fell to the ground is 4m/s

then the speed when it bounced back using the coefficient 1/2(4)= 2m/s