Two identical solid balls, one of ivory and the other of wet-clay, are dropped from the same height on the floor. Which one will rise to a greater height after striking the floor and why?

Explanation

We know that ivory ball is more elastic than wet clay ball. Therefore, the ivory ball will tend to regain its original shpae in a very short time after the collision. Due to this, there will be large energy and momentum transfer to the ivory ball incomparison to the wet clay ball. As a result of it, the ivory ball will rise higher after the collision.