Question: A 28-kg rock approaches the foot of a hill with a speed of 15 m/s. This hill slopes upward at a constant angle of 40.0? above the horizontal. The coefficients of static and kinetic friction between the hill and the rock are 0.75 and 0.20, respectively.
Part A: Use energy conservation to find the maximum height above the foot of the hill reached by the rock.
I need help to find the maximum height above the foot of the hill reached by the rock.