The clumsy professor rolls a heavy ball and a light ball along atable but doesn’
ID: 1679121 • Letter: T
Question
The clumsy professor rolls a heavy ball and a light ball along atable but doesn’t manage to
stop them before they roll off. One ball weighs twice as muchas the other; the lighter ball
happens to roll at twice the speed. Each hits the floor atsome horizontal distance from thtable —how do those distancescompare?
A. The heavier ball will hit atabout a fourth the distance from the table as the lighterball.
B. The heavier ball will hit between¼ and ½ the distance from the table as the lighterball.
C. The heavier ball will hit atabout half the distance from the table as the lighterball.
D. The heavier ball will hit atabout the same distance from the table as the lighterball.
E. The heavier ball will hit thefloor at twice the distance from the table as the lighterball.
F. The heavier ball will hit morethan twice the distance from the table as the lighterball.
Explanation / Answer
The two ballstake the same time to hit the floor (same verticalacceleration), and one’s moving 2x as fasthorizontally.
The two ballstake the same time to hit the floor (same verticalacceleration), and one’s moving 2x as fasthorizontally.