A block of mass 2.0 kg moving at 2.0 m/s collides head on with another block of equal mass kept at rest. a. Find the maximum possible loss in kinetic energhy due to the collision. b.If the actual loss in kinetic energy is half of this maximum, find the coefficient of restitution.

Explanation

To solve the problem step by step, we will break it down into parts (a) and (b) as specified in the question.

### Part (a): Maximum Possible Loss in Kinetic Energy

1. **Identify the masses and initial velocities:**
- Mass of block 1, \( m_1 = 2.0 \, \text{kg} \)
- Initial velocity of block 1, \( u_1 = 2.0 \, \text{m/s} \)
- Mass of block 2, \( m_2 = 2.0 \, \text{kg} \) (at rest)
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