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A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n
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If a 200kg cart starts at point A, what is its potential energy? PE=mgh g=9.8 A. 28,000 J B. 274,400...
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