please help me with this question...i also do not understand whats mean by

Fazmi A

New member
initial elevation....? A skier of mass 70 kg starts from rest and slides down a slope that makes an angle
of 30 o with the horizontal. The initial elevation is 50 meters, and the coefficient of
kinetic friction between the skis and the snow is = 0 .1 k m . What is the skier’s
velocity at the bottom of the slope?
 
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