I am struggling a little bit on this problem. Any help is appreciated. 1. The problem statement, all variables and given/known data A 5.60 kg block is set into motion up an inclined plane with an initial speed of v0 = 8.10 m/s. The block comes to rest after traveling 3.00 m along the plane, which is inclined at an angle of 30.0° to the horizontal. The first question was to find the change in kinetic energy, which ZI found to be -183.708 The second question was to find the change in potential energy, which I found to be 82.404 The third question is determine the frictional force exerted on the block(assumed to be constant). I can't seem to figure out the third question. After finding the frictional force, it asks for the coefficient of kinetic friction, which I'm sure i can find by dividing the frictional force by the normal force. 2. Relevant equations Ff = μFn where Ff is the frictional force, μ is the coeifficient of kinetic friction, and Fn is the normal force. F=ma F is the force on the mass, m is the mass, a is the acceleration v2 = vo2 + 2a(Δx) v is final velocity, vo is initial velocity, a is acceleration, Δx is the displacement Acceleration I found to be -10.935 Normal force = 47.57592 3. The attempt at a solution I have found acceleration to be -10.935. So I found the total force to be -61.236. I have tried to solve for the frictional force by setting the total force equal to the frictional force + gravitational force and solved for frictional. I have also made other attempts but they were very random and I dont recall what made me come up with them. I have submitted 5 incorrect answeres so far. I tried to upload a picture of the slope and block, I'm not sure if it worked. Thanks in advance for any help.