A ball of mass 0.50 kg moving at a speed of 5.0 m/s collides with another ball of mas 1.0 kg. After the collision the balls stick together ane remain motionless. What was the velocity of the 1.0 kg block before the collision?

Explanation

To solve the problem, we will use the principle of conservation of momentum. The total momentum before the collision must equal the total momentum after the collision.

### Step-by-Step Solution:

1. **Identify the masses and velocities:**
- Mass of the first ball (m1) = 0.50 kg
- Velocity of the first ball (v1) = 5.0 m/s (moving towards the right)
- Mass of the second ball (m2) = 1.0 kg
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