In a perfectly ELASTIC collision between two perfectly rigid objects
A) the momentum of each object is conserved.
B) the kinetic energy of each object is conserved.
C) the momentum of the system is conserved but the kinetic energy of the system is not conserved.
D) both the momentum and the kinetic energy of the system are conserved.
E) the kinetic energy of the system is conserved, but the momentum of the system is not conserved.

Question

Quizplus · Accepted Answer

In a perfectly elastic collision, both momentum and kinetic energy of the system are conserved. This means that the total momentum of the system before the collision is equal to the total momentum after the collision, and the total kinetic energy of the system before the collision is equal to the total kinetic energy after the collision. Therefore, statement D is correct. Statements A, B, C, and E are incorrect.

In a Perfectly ELASTIC Collision Between Two Perfectly Rigid Objects