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Determine the kinetic energy of a 625-kg roller coaster car that is moving with a...

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Determine the kinetic energy of a 625-kg roller coaster car that is moving with a speed of 18.3 m/s. a. If the roller coaster car in the above problem were moving with twice the speed, then what would be its new kinetic energy? b. What would be the ?KE in this problem, and what would be the work done on the roller coaster?

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