Question

When a body falls freely, its potential energy is converted into kinetic energy. But when the freely falling body reaches the ground, it comes to rest. What happens to the kinetic energy of the body when it stops on reaching the ground?

Answer 1

1. When a body falls freely its speed continuously increases so, its potential energy is converted into kinetic energy.
2. When the free-falling body reaches the ground its kinetic energy is converted into different forms of energy like heat energy, and sound energy.
3. Hence, all the kinetic energy of the body is lost and the body comes to rest.