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During a rockslide, a 520 kg rock slides from rest down a hillside that is 500 m long and 300 m high. (a) What is

During a rockslide, a 520 kg rock slides from rest down a hillside that is 500 m long and 300 m high. (a) What is the initial potential energy of the rock? (b) What is the final kinetic energy of the rock? Ignore friction. (c) How fast is the rock moving at the bottom of the hillside?

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