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You push with a horizontal force of 50.0N against a 24.0N box, pressing it against a rough wall to hold it in place. The coefficients of kinetic and static friction between this box and the wall are 0.300 and 0.600, respectively.
a. what is the friction force of the box?
b. how hard would you have to press for the box to slide down with a uniform speed of 14.5 cm/s?
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A sled and rider with with a combined mass of 50kg are at the top of a hil a height of 14m above the level ground below, After the push, what is the total mechanical energy of the sled and rider at the top of the hill
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A hotel elevator ascends 200 m with maximum speed of 5m/s . Its acceleration and deceleration both have a magnitude of 1.0 m/s^2 . a.)How far does the elevator move while accelerating to full speed from rest?
A 64 kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal, What is the magnitude of the kinetic frictional force
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