Finding mew with the angle

[sourna]

Homework Statement

A skier traveling 12.6 m/s reaches the foot of a steady upward 20° incline and glides 11.4 m up along this slope before coming to rest. What was the average coefficient of friction?

Homework Equations

Egi+Eki+wnc=Egf+Ekf

The Attempt at a Solution

I solved for everything but i don't know how to solve for mew

 

[Redbelly98]

Welcome to Physics Forums.

Homework Statement

A skier traveling 12.6 m/s reaches the foot of a steady upward 20° incline and glides 11.4 m up along this slope before coming to rest. What was the average coefficient of friction?

Homework Equations

Egi+Eki+wnc=Egf+Ekf

The Attempt at a Solution

I solved for everything but i don't know how to solve for mew

Can you show what you did with the equation by using the given information? Also, you'll need to think about how wnc is related to friction.

 

[sourna]

Welcome to Physics Forums.

Can you show what you did with the equation by using the given information? Also, you'll need to think about how wnc is related to friction.

is it ok if i say no? I don't understand it very well you see because I am not sure if 11.4 m is height or distance.

 

[Redbelly98]

Okay. 11.4 m is the distance along the slope, not the height. That should help you with finding Egi and Egf in the equation you wrote earlier.