Question

Mud thrown on a wall and sticking to it is an example for ___________

(a) Inelastic collision

(b) Elastic collision

(c) Super elastic collision

(d) Perfectly inelastic collision

I had been asked this question during an online interview.

My doubt stems from Work and Energy topic in division Nature of Physical World of Engineering Physics I

Answer 1

The correct answer is (d) Perfectly inelastic collision

To explain: If two bodies stick together after the collision and move as a single body with a common velocity, then the collision is said to be perfectly inelastic collision. A mud thrown on a wall sticks to the wall, hence it is an example for perfectly inelastic collision.