The equation of motion of a particle is s = to - 27t, where s is measured in meters and t is in seconds. (Assume t 2 0.) (a) Find the velocity and acceleration as functions of t. v(t) = a(t) = (b) Find the acceleration, in m/s , after 6 seconds. m/s 2 (c) Find the acceleration, in m/s, when the velocity is 0. m/s2