Question

49. When a ball is dropped from some height it rebounds after striking against the
floor. Why?​

Answer 1

Answer:

The answer to this lies in the concept of elasticity and elastic collision.

In an elastic collision the forces of collision are absorbed and transfered into the rebound force that propells the rubber ball upwards with and equal force ideally. But in reality some part of the rebound force is lost in overcoming the deformation and also going against the gravity and overcoming air resistance.

But in the case of a metal ball there is no transfer of energy it absorbs all the energy and also doesn't produce enough energy in the rebound to again bounce back as it's elastic coefficient isn't high as a rubber ball.

So the metal ball due to a less value of elastic coefficient more rigid structure doesn't bounce as high as compared to a rubber ball with a high value of elastic coefficient and less rigid in nature.

I hope this gave you some idea.Give this link a look if you want to know how the elastic coefficient and process of collision takes place:-)

Cheers.!!

Explanation:

Answer 2

Answer:

due to potential energy