1. A 70.0-kg skier slides down a uniform 30.0 slope of snow, starting from rest at the top of the hill. The distance traveled along the slope is 250 m.

(a) Assuming no friction, how large is her kinetic energy, in joules, at the bottom of the hill?

(b) How fast will the skier be going when she reaches the bottom of the hill?

(c) Suppose instead that the skier is slowed down by a kinetic friction force equal to f_k = 60.0 N up the slope. (hint: you must use answer from (b) to find this answer)