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.

Option B is there correct answer

Explanation:

According to their principle Of The conservation of mechanical energy:it State that in a closed system, the total mechanical energy is always constant although energy may change from one form to another. e. g from potential energy to kinetic energy

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.