1. The problem statement, all variables and given/known data The 60 kg block starting at rest is pushed 7.8 m up a ramp at an angle θ = 26.5° to the horizontal in 15 s. If the coeficient of kinetic friction is 0.17: What is the acceleration of block? What is the force used to push the block up the ramp? 2. Relevant equations Fnet = ma Delta X = Vit + (1/2)at^2 Fg=ma Fkinetic = μ * N 3. The attempt at a solution I think I understand the first part, 7.8 = 0*15 + (1/2)(a)(15^2) 7.8 = 112.5a .069=a But the second part is whats giving me trouble Do I need to make an Fnet = ma equation? If I do I know that it would look like this Force of Push - Force of friction = ma Force of Push - Force of friction = (60)(.069) Can I substitute in this equation? Fkinetic = μ * N for Fk? Force of Push - (μ * N) = 60* .069 Fpush - (.17 * N) = 4.14 But what is my N force? I think that it would just be mass times acceleration of gravity and in that case: Fpush - (.17 * (60 * 9.81)) = 4.14 Fpush - 100.06200 = 4.14 Fpush = 104.20200N I'm not sure if this is right, I appreciate your help in advance.