A skier slides horizontally along the snow for a distance of 27 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is ľk = 0.050 Initially, how fast was the skier going?

m/s

not sure how to reach the answer with so few variables involved.

equations i thought i might use were: vf = sqrt((2 * (KE) / m)

and KE = 1/2*(m * v^2)

thanks for any extra help.