The graph shows the velocity of a vehicle as a function of time v(t) = 0.90t^3 - 2.70t^2 - 5.0t - 2.0. The time is in seconds and the velocity is in m/s. All motion occurs along a straight line. (a) Determine the change of position for the vehicle from t = 0.0 s to t = 5.0 s. (b) What is the acceleration of the vehicle at 2.0 seconds? {-39.2 m, -5 m/s^2}