6.A 59.0kg snowboarder descends a 1.30km skiyhill from the top of a mountain to the base (seediagram). The slope is at an angle of 14.0° to thehorizontal. Determine the snowboarder's1.3 kmgravitational potential energy relative to the0 = 14°mountain base when she is at the top. DetermineDrawing not to scalethe energy loss due to friction if the snowboarder has a final speed of 13.5m/s atthe mountain base. What will be the average coefficient of kinetic friction?Answer: The total gravitational potential energy was 182kJ, or 1.82×10°J.Theamount of energy loss was 177kJ, or 1.77×10'J. As a result, theaverage coefficient of kinetic friction will be approximately 1.00.Source: modified from Nelson, Physics 12, 2009, p. 181, Question #7

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