A ball is falling a height of 50 m . It strikes the ground and rebounds to a height of 10 m . Calculate the velocity of the ball just before and after the collision . Also find the loss of kinectic energy of the ball during its collisio with ground .

Explanation

To solve the problem step by step, we will calculate the velocity of the ball just before and after the collision, and then find the loss of kinetic energy during the collision with the ground.

### Step 1: Calculate the velocity just before the collision

1. **Use the equation of motion**:
\[ v^2 = u^2 + 2gh \]
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