The function s = fit) gives the position of a body moving on a coordinate line, with s in meters and t in seconds. s = 4t - t . Osts4 Find the body's speed and acceleration at the end of the time interval, A 4 m/sec, - 2 m/sec2 B 4 m/sec, -8 m/sec -4 m/sec, - 2 m/sec2 D 12 m/sec, -8 m/sec E -4 m/sec, -8 m/sec2