Review. A particle moves along the x axis. It is initially at the position 0.270 m , moving with velocity 0.140m/ s and acceleration -0.320m / s² . Suppose it moves as a particle under constant acceleration for 4.50 s . Find (b) its velocity at the end of this time interval. Next, assume it moves as a particle in simple harmonic motion for 4.50s and x = 0 is its equilibrium position. Find