1. The problem statement, all variables and given/known data Suppose a slide similar to Der Stuka is 36.0 meters high, but is a straight slope, inclined at 45° with respect to the horizontal. (a) Find the speed of a 51.1 kg thrill seeker at the bottom of the slide, assuming no friction. 26.5 m/s (b) If the thrill seeker has a speed of 22.6 m/s at the bottom, find the change in mechanical energy due to friction. -4978 J (c) Find the magnitude of the force of friction, assumed constant. ____ N 2. Relevant equations/attempts Magnitude of F = W/change in X, but no X is given, just Y. I know F= mu/N and I found normal force to be [51.1 kg*9.8 m/s^2 cos(45)]=354 N I am stuck there and cannot think of a way to calculate mu.