A simple harmonic oscillator's acceleration is given by ay(t) = (0.780 m/s²) cos(11.6t - 5.45). Find the oscillator's position, velocity, and acceleration at each of the following times. (Include the sign of the value in your answer.) (a) t = 0 position m velocity m/s m/s² acceleration (b) position m velocity m/s acceleration m/s² (c) t = 2.00 s position m velocity m/s acceleration m/s² t = 0.500 s