Joe and Bill throw identical balls vertically upward. Joe throws his ball with an initial speed twice as high as Bill. If 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.
Question 2
Monochromatic light is incident on a metal surface and electrons are ejected. If the intensity of the light is increased, what will happen to the ejection rate and maximum energy of the electrons?
A) Greater rate; same maximum energy.
B) Same rate; greater maximum energy.
C) Greater rate; greater maximum energy.
D) Same rate; same maximum energy.
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