Someone standing at the edge of a cliff throws one ball straight up and another ball straight down at the same initial speed.Neglecting air resistance,the ball to hit the ground below the cliff with the greater speed will be
A)the one thrown upward.
B)the one thrown downward.
C)neither -- they will both hit with the same speed.

Question

Quizplus · Accepted Answer

Both balls will hit the ground with the same speed because they both start with the same initial speed and are subject to the same gravitational acceleration. The ball thrown upward will decelerate, stop, and then accelerate downward, reaching the same speed it was initially thrown with when it returns to the original height, thus both balls will have the same speed upon impact.

Someone Standing at the Edge of a Cliff Throws One