Question

In an inelastic collision-

• A. Momentum of the system is always conserved.
• B. Velocity of separation is less than the velocity of approach.
• C. The coefficient of restitution can be zero.
• D. All of the above.

Answer 1

The correct option is D All of the above.

In inelastic collision momentum of the system is always conserved if $F_{ext}=0$.
Velocity of separation is less than the velocity of approach since co-efficient of restitution e < 1
$e=0$ for a perfectly inelastic collision since the colliding particles stick together after collision.
Hence, option (D) is correct.