Which statement correctly describes a perfectly elastic collision between two objects?
- ATotal kinetic energy is conserved and the relative speed of approach equals the relative speed of separation.
- BTotal kinetic energy is conserved but the relative speed of approach does not equal the relative speed of separation.
- CTotal kinetic energy is not conserved and the relative speed of approach does not equal the relative speed of separation.
- DTotal kinetic energy is not conserved but the relative speed of approach does equal the relative speed of separation.