Stuck on this downhill skiier problem help

[Cornraker]

Homework Statement

A sker reaches a speed of 56 m/s on a 30 degree ski slope. Ignoring friction, what was the minimum distance along the slope the skier would have had to travel, starting from rest?

Homework Equations

Which equation do i start with? I'm pretty sure i have to find the x-y component of the acceleration but I'm not sure I'm flat out stuck on this problem.

The Attempt at a Solution

If i draw a right triangle, and the opposite leg is -9.8 m/s do i use sin30 to find the acceleration down the slope?

 

[elitewarr]

You can resolve it in a way that is parallel and perpendicular to the ski slope. So find acceleration and then use the formula v^2 = u^2 + 2as to solve it.

 

[Cornraker]

i figured it out. it was two steps