Question

The coefficient of restitution of a perfectly plastic impact is equal to:

• A. Infinity
• B. 2
• C. 1
• D. 0

Hint:

For a perfectly plastic collision the coefficient of restitution is always zero

Answer 1

The Correct Option is D

In a perfectly plastic impact the objects involved in the collision do not rebound and the velocity of separation is zero. The coefficient of restitution is defined as the ratio of relative velocity after collision to relative velocity before collision. Since there is no rebound the coefficient of restitution equals zero