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2. Consider the diagram representing a portion of an amusement park ride. Y axis is the height above ground in meters. A 100 kg car has 30.000 J of potential energy at point A. It moves down a --B frictionless track and comes to a stop as it compress a huge spring at point D. (1) On the diagram below, sketch the energy bar graphs when the car is at the indicated points. (2) How much kinetic energy does the car have at point C? Explain or calculate. (3) How fast is car moving at point B? Explain or calculate. (4) How much elastic potential energy does the car have at point D? Explain or calculate.
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Solution PE of cart 3000 o Jouls me ter haight A only at 30 A1 So Point PE EK Ep Ee Ele E E el DSLT 30000 70000 10ooo changes

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