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Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass...

Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of 97.5 kg, down a 60.0° slope at constant speed. The coefficient of kinetic friction between the sled and the snow is 0.100.

a) How much work in joules, is done by friction as the sled moves 3l m along the hill?

b)How much work in joules, is done by the rope on the sled over this distance ?

c) What is the work in joules, done by the gravitational force on the sled?

d)What is the net work done on the sled, in joules?

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