A ball rolling down an incline has its maximum kinetic energy at
A) the top.
B) half-way down.
C) three-quarters of the way down.
D) the bottom.
Question 2
Joe and Bill throw identical balls vertically upward. Joe throws his ball with an initial speed twice as high as Bill. Assuming there is no air resistance, the maximum height of Joe's ball will be
A) four times that of Bill's ball.
B) two times that of Bill's ball.
C) equal to that of Bill's ball.
D) eight times that of Bill's ball.
E) roughly 1.4 times that of Bill's ball.
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