Work and energy theorem question

[slil]

Homework Statement

a 73kg skier coasts up a hill inclined at 9.3 degrees to the horizontal. friction is negligible. Use the work and energy theorem to determine how far along the hill the skier slides before stopping, if the initial speed at the bottom is 4.2m/s

Homework Equations

w=ek ( i think)

The Attempt at a Solution

really don't understand this question (missed the first 2 days of a new unit and am pretty lost :/)

 

[Simon Bridge]

No worries - have you tried looking up "Work-Energy Theorem" online?

It's basically a conservation of energy problem, with a shortcut using W=ΔE and W=Fd.