Question

A ball of mass 200g falls from a height of 10m and rebounds to a height of 8m then loss in Kinetic energy in striking will be.(g=10m/s2)

Answer 1

Explanation:

height = 5m

mass = 200g

potential energy = mgh = 0.2 ∗ 5 ∗ 9.8 = 9.8J

Since potential energy at the highest point is equal to kinetic energy at lowest point , therefore kinetic energy will be 9.8J