1. The problem statement, all variables and given/known data A 51kg child goes down a 42 degree slide. What is the normal force on him? If the coefficient of friction is .10, what is the net force on him? How far down does he slide before reaching 2.5 m/s? 2. Relevant equations Fk = μFn F = ma 3. The attempt at a solution Fn = 51gcos(42) = 379 N I have no idea what to do to find the net force.