Two masses collide and stick together.Before the collision one of the masses was at rest.Is there a situation in which the kinetic energy is conserved in such a collision?
A)Yes,if the less massive particle is the one initially at rest.
B)Yes,if the more massive particle is the one initially at rest.
C)Yes,if the two particles have the same mass.
D)No,kinetic energy is always lost is such a collision.

Question

Quizplus · Accepted Answer

In a collision where two masses stick together, the collision is inelastic, meaning kinetic energy is not conserved. This is due to the fact that some of the kinetic energy is converted into other forms of energy, such as heat or internal energy, during the collision.

Two Masses Collide and Stick Together