Consider a situation where two moving objects collide, stick to each other, and move off together.
-Kinetic energy is definitely not conserved.

Question

Quizplus · Accepted Answer

Kinetic energy is not conserved in an inelastic collision where the objects stick together and move off as one object. Some kinetic energy is lost as heat or transferred to other types of energy during the collision.

Consider a Situation Where Two Moving Objects Collide, Stick to Each