Jim rides his skateboard down a ramp that is in the shape of a quarter circle with a radius of 5.00 m. at the bottom of the ramp, jim is moving at 9.00 m/s. jim and his skateboard have a mass of 58.4 kg. how much work is done by friction as the skateboard goes down the ramp?

Wfr=-496.4 J

Explanation:

The total work of the motion is describe

x=5.0m

v=9.0 m/s

m=58.4kg

The Work of the friction can be find without know the coefficient however knowing the total work and the work done by the gravity down a ramp can find the work of the friction

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