A child throws a ball perfectly horizontally at the same time a dirt clod falls off it at the same height above the ground. The clod falls vertically downward. Ignoring air resistance, the time when the clod hits the ground will
A) be equal to the time the ball hits the ground
B) be earlier than when the ball hits
C) be later than when the ball hits
D) not depend upon how high it started falling from

Question

Quizplus · Accepted Answer

The time it takes for both the clod and the ball to hit the ground is determined only by their initial height and the acceleration due to gravity, not by their horizontal velocities. Since both start from the same height and fall under gravity, they will hit the ground at the same time.

A Child Throws a Ball Perfectly Horizontally at the Same