A simple harmonic oscillator consists of a block of mass 2.80 kg attached to a spring of spring constant 400 N/m. When t = 1.80 s. the position and velocity of the block are x = 0.167 m and v = 4.490 m/s. (a) What is the amplitude of the oscillations? What were the (b) position and (c) velocity of the block at t = 0 s? (a) Number Units (b) Number Units (c) Number Units