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Arock is thrown upward from the top of a 30 m building with a velocity of 5 m/s. determine its velocity (a) when it falls back past its original point, (b) when it is 15 m above the street, and (c) just before it hits the street. a horse drags a 100 kg sled a distance of 4 km in 20 minutes. the horse exerts one horsepower, of course. what is the coefficient of sliding friction between the sled and the ground?
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Arock is thrown upward from the top of a 30 m building with a velocity of 5 m/s. determine its veloc...
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