Asolid sphere of mass m and radius r rolls down a ramp, starting from rest at a height h above a nearby horizontal surface. the coefficients of kinetic and static friction µk and µs are non-zero, and sufficiently large that the ball rolls down the ramp without slipping. assume that the coefficient of rolling friction is zero. as the sphere leaves the ramp, it continues along a horizontal surface (with the same frictional coefficients as the ramp).