Physics - The Work-Energy Theorem and Kinetic Energy?

Chris S · #1 (**permalink**) 04-02-2008, 09:55 PM

An extreme skier, starting from rest, coasts down a mountain that makes an angle 25.0° with the horizontal. The coefficient of kinetic friction between her skis and the snow is 0.200. She coasts for a distance of 9.9 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 3.70 m below the edge. How fast is she going just before she lands?

odu83 · #2 (**permalink**) 04-02-2008, 09:58 PM

v=sqrt(2*(9.9*9.8*(sin25-
cos25*0.2)+3.7*9.8))

10.92 m/s

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