1. The problem statement, all variables and given/known data Starting from rest 10.0 kg mass slides 5.00 m down a 20.0 incline. The coefficient of kinetic friction is 0.300. (a) Determine the work done by the force of gravity. (b) Determine the work done by the force of kinetic friction. (c) Determine the change in gravitational potential energy. (d) Determine the kinetic energy of the block at the bottom. 2. Relevant equations umm... kinetic energy = 1/2mv² i believe gravitational potential energy = mass*gravity*height Work = Force * distance * cosθ 3. The attempt at a solution well for part A) I was thinking (10.0kg*9.81m/s²) * 5.00m * cos(20) for part B) I was thinking .300 * 5.00m * cos(20) for part C) I was thinking 10.0kg * 9.81m/s² * (5.00m *sin20)to find the vertical height?? and for part D) I was thinking it would be 0 because at the bottom...velocity would be 0...so 1/2*mass*0² = 0 are any of these assumptions correct?