Explain this?
A skier traveling 12.0 m/s reaches the foot of a steady upward 18° incline and glides 12.2 m up along this slope before coming to rest. What is the average coefficient of friction?

Question

Explain this?
A skier traveling 12.0 m/s reaches the foot of a steady upward 18° incline and glides 12.2 m up along this slope before coming to rest. What is the average coefficient of friction?

jennychan12 · Answer

i know that
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jennychan12 · Answer

i know it's non conservative, but what about the mass?
because the W(fr) has no mass attached to it.

anonymous · Answer

Find the average retardation by v^2-u^2=2as
where final velocity v=0
          initial velocity u=12m/s
          distance travelled=12.2m

After that use  a=gsin(18)+xgcos(18)
 to solve for x, the coefficent of friction

jennychan12 · Answer

so the masses basically just cancel out?
thanks.