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2) In an amusement park in Wisconsin, you play with a race car of mass m and release it from the rest on the loop-the-loop track. Assume the initial height of the car at the moment that you released was 2R above the floor
a)What is the speed of the car at the bottom of the loop?
b)What is the speed of the car when it traversed 1⁄4 of the loop?
c) how high is it above the floor when it leaves the track, neglecting friction?
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