A heavy rock and a light rock are dropped from the same height and experience no significant air resistance as they fall. Which of the following statements about these rocks are correct? a. Just as they are about to reach the ground, the heavier rock has more kinetic energy than the lighter rock.
b. The moment they were released, both rocks had the same amount of gravitational potential energy.
c. Both rocks have the same kinetic energy when they reach the ground.
d. The heavier rock reaches the ground before the lighter rock.
e. Both rocks different acceleration as they are about to reach the ground