For a System Consisting of Two Particles That Undergo an Elastic

Multiple Choice

For a system consisting of two particles that undergo an elastic collision,

A) momentum is conserved but the total energy is not conserved.
B) neither the kinetic energy nor the momentum is conserved.
C) neither the total energy nor the momentum is necessarily conserved.
D) the mechanical energy is conserved but momentum is not conserved.
E) both kinetic energy and momentum are conserved.