The coefficient of kinetic friction between skis and snow

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Q. An extreme skier, starting from rest, coasts down a mountain that makes an angle of 24.6 ° with the horizontal. The coefficient of kinetic friction between her skis and the snow is 0.119. She coasts for a distance of 17.8 m before coming to the edge of a cliff. Without slowing down, she skis off the cliff and lands downhill at a point whose vertical distance is 4.15 m below the edge. How fast is she going just before she lands?

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