A ball is thrown up at an angle with the horizontal. Then the total change of momentum by the instant it returns to ground is:
a) acceleration due to gravity x total time of flight
b) weight of the ball x half the time of flight
c) weight of the ball x total time of flight
d) weight of the ball x horizontal range
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weight of ball and×total time of flight
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Answer:
The correct answer is weight of the ball×total time of flight.
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