A particle of mass m undergoing simple harmonic motion is initially at x = 28 cm with a period of 1.5 s and moving with velocity vp = 51 cm/s. Enter any numerical coefficients as decimal values with two significant figures. Write an expression for the particle's position x(#) in centimeters as a function of time 7. x(n)= | Write an expression for the particle's velocity v, (f)in centimeters per second as a function of time t. v (t) = ' Write an expression for the particle's acceleration a,(t) in centimeters per second squared as a function of time . a,(f) =