A tennis ball is dropped on to the floor from a height of `4.00 m`. It rebounds to a height of `3.00 m`. If the ball was in contact with the floor for `0.010 sec`, what was its average acceleration during contact?

Explanation

To find the average acceleration of the tennis ball during its contact with the floor, we can follow these steps:

### Step 1: Determine the initial velocity (V1) just before the ball hits the ground.
The ball is dropped from a height of 4.00 m. We can use the kinematic equation:
\[ V^2 = U^2 + 2a s \]
Where:
- \( V \) is the final velocity just before hitting the ground (V1),
- \( U \) is the initial velocity (0 m/s, since it is dropped),
...