I need help with a physics problem, if someone could help me with the fomula, please. When mass M is at the position shown, it is sliding down the inclined part of a slide at a speed of 2.23 m/s. The mass stops a distance S2 = 1.85 m along the level part of the slide. The distance S1 = 1.14 m and the angle theta = 29.3 degrees. Calculate the coefficient of kinetic friction for the mass on the surface.