Two objects, one less massive than the other, collide elastically and bounce back after the collision. If the two originally had velocities that were equal in size but opposite in direction, then which one will be moving slower after the collision?
A) The less massive one.
B) The more massive one.
C) The speeds will be the same after the collision.
D) There is no way to be sure without the actual masses.

Question

Quizplus · Accepted Answer

In an elastic collision where two objects have equal and opposite velocities, the more massive object will move slower after the collision due to conservation of momentum and kinetic energy.

Two Objects, One Less Massive Than the Other, Collide Elastically