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A car in an amusement park roller coaster ride rolls without friction at the top of a hill. The car begins at a height h from the top of a hill. A the bottom, the car then goes through a vertical loop where the car is upside down at the loop\'s top. If the height is instead 70m, what is the car\'s speed at the top of the loop? From a 70m height, what is the magnitude of the car\'s radial acceleration? From 70m, what is the magnitude of the car\'s tangential acceleration?

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