Two balls are thrown from the top of a building.One is thrown up and the other is thrown down,both with the same initial speed.What are their speeds when they hit the street?
A) they are traveling at the same speed
B) the one thrown down is traveling faster
C) the one thrown up is traveling faster
D) it depends on the height of the building

Question

Quizplus · Accepted Answer

The two balls have the same initial speed but in opposite directions. As they both fall under gravity, their speeds increase at the same rate. When they hit the street, they will have the same speed because they both fell from the same height and were subject to the same force of gravity. Therefore, they will hit the ground at the same velocity.

Two Balls Are Thrown from the Top of a Building