A ball is released from rest on a no-slip surface, as shown in the figure. After
ID: 1494575 • Letter: A
Question
A ball is released from rest on a no-slip surface, as shown in the figure. After reaching its lowest point, the ball begins to rise again, this time on a frictionless surface as shown in the figure. When the ball reaches its maximum height on the frictionless surface, it is
A) at the same height as when it was released. B) at a lesser height as when it was released. C) at a greater height as when it was released. D) It is impossible to tell without knowing the mass of the ball. E) It is impossible to tell without knowing the radius of the ball.Explanation / Answer
at a lesser height than when it was released
When a ball is bouncing high into the air, it will continue to bounce for some time. By contrast, a lowbouncing ball will quickly run out of room between the height of each bounce and the ground, and, as such, will soon stop bouncing altogether. Therefore, it only makes sense that a ball will bounce more often when it is released from a greater height
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