Physics

The ball's speed just before and after the rebound can be compared using the kinematics equation and the relationship between velocity and height in free-fall motion.

Speed just before rebound:

When the ball is dropped from a height of h = 5 m, it accelerates under gravity. The speed just before hitting the ground can be found using the following kinematic equation:

So, the speed just before the rebound is:

Speed just after rebound:

The ball rebounds to a height of h = 3m. The speed just after the rebound can be found similarly: