1. The problem statement, all variables and given/known data A dockworker allows a 350-N crate to slide down an incline that is 8 m in length to the deck of a ship 5 m below the dock level. The rough incline exerts a frictional force of 50 N on the crate. (a) What is the speed of the crate as it reaches the deck (b) What is the coefficient of friction between the incline and the crate? 2. Relevant equations Wnc= (KEf-Kei)+ (PEf-PEi) E= KE+PE 3. The attempt at a solution I am having trouble with this problem because it does not include θ which means I cant find the initial potential energy. I also don't have the velocity at any point so I don't know the kinetic energy either. I can't substitute to find the answer because I have more unknowns than equations.