a boy drags his 60.0-N sled at constant speed up a 15(degree) hill. he does so by pulling with a 25-N force on a rope attached to the sled. if the rope is inclined at 35(degree) to the horizontal, (a) what is the coefficient of kinectic friction between sled and snow? (b) At the top of the hill, he jumps on the sled and slides down the hill. What is the magnitude of his acceleration downthe slope. i think the whole using the angles to solve the problem is throwing me off. midterms are later today. plz help i drew the diagram and everything, yet it is hard for me to relate coefficeint of kinectic friction.