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You are testing a new amusement park roller coaster with an empty car with a mass of 108kg. one part of the track is a vertical loop with a radius of 12.0m. at the bottom of the loop (pointa) the car has a speed of 25.0m/sand at the top of the loop (pointb) it has speed of 8.00m/s. as the car rolls from point a to point b, how much work is done by friction?
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You are testing a new amusement park roller coaster with an empty car with a mass of 108kg. one part...
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