The position of a body moving on a coordinate line is given by s = t2 2t 3 for 0 g t S 3, with 3 in meters and t in seconds. (a) Find the body's displacement and average velocity for the given time interval. Displacement = y" m Average velocity = i, m/s (b) Find the body's velocity at the endpoints of the interval. Velocity at t = 0 is [9" m/s Velocity at t = 3 is '9', m/s (c) Find the body's acceleration at the endpoints of the interval. Acceleration at t = O is I; m/s Acceleration at t = 3 is 9'. m/s (d) When, if ever, during the interval does the body change direction? If there is more than one answer, enter a comma separated list. If the body never changes direction during the interval, enter NONE