A bouncing ball eventually comes to rest. What happened to the ball's
kinetic and potential energy?
A. It has been permanently destroyed, reducing the total
energy of the universe.
B. It has been converted to other forms; the total amount of
energy in the universe remains unchanged.
C. It has transferred to the surroundings, increasing the
total energy available in the universe.
D. The ball's motion temporarily increased the amount of
energy in the universe, but the level returned to its
former value as the ball came to rest.