5.82 - Pushing a Cat. Your cat Ms. {mass 7.00 kg) is try- ing to make it to the top of a frictionless ramp 2.00
5.82 "- Pushing a Cat. Your cat \"Ms." {mass 7.00 kg) is try- ing to make it to the top of a frictionless ramp 2.00 m long and inclined upward at 30.0\" above the horizontal. Since the poor cat can't get an).r traction on the ramp, you push her up the entire length of the ramp by exerting a constant IOU-N force parallel to the ramp. If Ms. takes a running start so that she is moving at 2.40 m/s at the bottom of the ramp, what is her speed when she reaches the top of the incline? Use the work-energy theorem. 7.52 -- A 60.0-ltg skier starts from rest at the top of a ski slope 65.0 m high. (a) If frictional forces do l0.5 k] of work on her as she descends, how fast is she going at the bottom of the slope? (b) Now moving horizontally. the skier crosses a patch of soft snow, where M = 0.20. If the patch is 82.0 m wide and the aver age force of air resistance on the skier is I60 N, how fast is she going after crossing the patch? to) The skier hits a snowdrift and penetrates 2.5 m into it before coming to a stop. What is the aver- age force exerted on her by the snowdrift as it stops her
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