The position of a particle is given by the expression x = 4.00 cos(3.00πt + π), where x is in meters and t is
in seconds. Determine (a) the frequency and (b) period of the motion, and (e) the position of the particle at
t = 0.250 s, (e) the speed of the particle at t = 0.250 s, and (e) the acceleration of the particle at t = 0.250 s.