The equation of motion of a particle is s = 13 - 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/s2, after 8 seconds. m/s 2 (c) Find the acceleration, in m/s2, when the velocity is 0. m/s2 10 O