a roller coaster car is going over the top of a 15 meter radius circular rise. at the top of thehill, the passengers "feel light" with an apparent weight only 40% of their true weight. how fast is the roller coaster car moving , in m/s?
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A roller coaster car is going over the top of a 15-m-radius circular rise. At the top of the hill, the passengers "feel light," with an apparent weight only 50% of their true weight. How fast is the coaster moving?
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