Find the work done by the shopper
A shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25 downward from the horizontal. Find the work done by the shopper on the cart as the shopper moves along a 50.9 m length of aisle.
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A string under a tension of 59 N is used to whirl a rock in a horizontal circle of radius 3.9 m at a speed of 23.9 m/s. The string is pulled in, and the speed of the rock increases. When the string is 0.482 m long and the speed of the rock is 53 m
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