If the object-spring system is described by x = (0.325 m) cos (1.05t), find the following. (a) the amplitude, the angular frequency, the frequency, and the period A = .325 W = 1.05 m rad/s f = .167 Hz S T= 5.98 (b) the maximum magnitudes of the velocity and the acceleration V max a max m/s m/s (c) the position, velocity, and acceleration when t = 0.250 s x = m .0886 v = a What is the expression for v(t)? Evaluate it at t=0.250 s. m/s m/s