Question: Which of the following statements is true regarding the conservation of momentum in a rigid body system?

Options:

1. Momentum is conserved only in elastic collisions
2. Momentum is conserved in all types of collisions
3. Momentum is not conserved in inelastic collisions
4. Momentum is conserved only in isolated systems

Correct Answer: Momentum is conserved only in isolated systems

Solution:

Momentum is conserved in isolated systems, regardless of the type of collision.