Physics Work,Power & Energy Level: Misc Level

A child on a sled slides down an incline with a 20 degree slope.the incline is 10 meters long.The coefficient of kinetic friction is 0.12.Using Newton,s method and energy methods; the mass of the child and sled is 25 kg

a) Find the force of friction

b)Find the acceleration down the hill

c)Find the work done by the friction force

d) Find the kinetic energy and velocity at the bottom of the hill.