question archive An 850 kg roller-coaster is released from rest at Point A of the track shown in the figure
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An 850 kg roller-coaster is released from rest at Point A of the track shown in the figure. Assume there is no friction or air resistance between Points A and C. How fast is the roller-coaster moving at Point B? What average force is required to bring the roller- coaster to a stop at Point D if the brakes are applied at Point C?
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