A bicyclist on an old bike (combined mass: 89 kg) is rolling down (no pedaling or braking) a hill of height 101 m. Over the course of the 373 meters of downhill road, she encounters a constant friction force of 219 Newton. If her speed at the top of the hill is 9 m/s, what is her speed at the bottom of the hill?
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8 m/s^2, h = 101 m Initial potential energy = 89 * 9.8 * 101 = 87809 J Show more…
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