Situation 3: A skier of mass 78.0 kg is pulled up a slope by a motor-driven cable. 21. How much work is required to pull the skier a distance of 50.0 m up a 40.0° slope (assumed frictionless) at a constant speed of 3.20 m/s? 22. A motor of what power (Watts) is required to perform this task?
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