A ball strikes a smooth horizontal floor at an angle `alpha` with the normal to the surface and after rebounding from the floor , ball moves at an angle `beta ` with the normal . Find the relation between `alpha` and `beta ` if coefficient of elasticity is e .

Explanation

To find the relation between the angles of incidence (α) and reflection (β) of a ball rebounding off a smooth horizontal floor with a coefficient of restitution (e), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Problem**:
- A ball strikes the floor at an angle α with the normal (the line perpendicular to the surface).
- After rebounding, it moves at an angle β with the normal.
- The coefficient of restitution (e) relates the velocities before and after the collision.
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