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2. A 1000-kg roller-coaster car coasts freely from point 1, to point 2 and then to point 3 as shown below. Importantly it only

2. A 1000-kg roller-coaster car coasts freely from point 1, to point 2 and then to point 3 as shown below. Importantly it only just makes it over the hill at point 2 almost stopping there. Ignore friction. 2 10 m 13 y 15 m 3 (a) Approximately how much Kinetic Energy does the car have at point 1? (b) Approximately what is the Kinetic Energy of the car at point 3?

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