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A 60.0 kg skier starts from rest at the top of a hill with a 30.0 slope. She reaches the bottom of the slope 4.00 s later. If there is a constant 72.0 N friction force that resists her motion, how ... A 6Cl.O-kg skier starts from rest at the top of a ski slope 65.0 m high. (a) H frictional forces do 10.5 k1 of work on her as she descends bow fast is she going at 1he bottom of 1he slope? (b) Now moving horizontally, 1he skier crosses 8 patch of soft snow, where k = 0.20.
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