An object falls from a height of 10 m above the ground. After striking the ground it loses 50 % of its kinetic energy. The height upto which the object can rebounce from the ground is:

Step-by-step solution

K.E. just before striking the ground K₁=m g h₁=m g(10) K.E. just after striking the ground =K₁- 50 100 K₁= 50 100 K₁= K₁ 2 =K₂ Now, K₂=m g h₂ K₁ 2 =m g h₂ m g(10) 2 =m g h₂ h₂=5 ~m