The position of a particle is given by the expression x = 2.00 cos (4.00t + /4), where x is in meters and t is in seconds. (a) Determine the frequency. Hz (b) Determine period of the motion. 0.5 S (c) Determine the amplitude of the motion. 2 m (d) Determine the phase constant. 0.785 rad (e) Determine the position of the particle at t = 0.270 s. 0.615 You know the equation giving the position of the particle as a function of time. How do you use that equation to determine the position at a specific value of the time? m