A T-38 training jet has an acceleration of 3.8m/s2 that last for 6.0s during the initial phase of take off. The afterburner engines are then up to full power for an acceleration of 5.4m/s2. The speed needed for takeoff is 168 knots (1m/s = 1.94 knots). Calculate the length of runway needed and the total time of takeoff.