Select True or False to each of the following statements about collisions:
a. If two objects undergo a perfectly inelastic collision, they stick together after the collision.
b. In an elastic collision, total momentum is conserved.
c. In an elastic collision, kinetic energy is conserved.
d. In a perfectly inelastic collision, kinetic energy is not conserved.
e. In a perfectly inelastic collision, total momentum is not conserved.