Find Vf: MuK, D, & Angle Given - Answer ASAP

[joseernesto]

Homework Statement

a skier starts from rest at the top of a 20° incline and skis in a straight line to the bottom of the slope, a distance D of 400 meters. if the coefficient of kinetic friction between the kis and the snow os .2, calculate the skier´s speed at the bottom of the run

Homework Equations

ive tried all the equations that include all the variables but I am always missiing one variable like time, mass or acceleration

The Attempt at a Solution

 

[bp_psy]

You actually have the acceleration.It is the component of g along the slope.You don't need the mass and the time(what time?).

 

[joseernesto]

when u say g you are talking about gravity right?