Question

A ball is dropped on the ground from the height of $1m$. The coefficient of restitution is $0.6$. The height to which the ball will rebound is (in m)

• A. $0.6$
  
• B. $0.4$
  
• C. $0.36$
  
• D. $0.16$
  

Answer 1

Answer: (C)

$0.36$

Given : Coefficient of restitution $e=0.6$

Initial height from which the ball is dropped $h_i=1m$

Thus the height to which the ball will rebound after first collision is given by $h_f=e^2{h}_i$

$\therefore h_f=(0.6{)}^2\times 1=0.36$