On March 7th, 2009 14:00 13, Li Feng, a special pilot of the Air Force, piloted a J 10 fighter plane for tactical maneuver at an altitude of 54 kilometers from the airport and1/70 meters from the ground. Simple, V=aT, T= 10, so when the plane taxies 10 seconds, it is stationary. Looking at the problem in reverse, it is considered that the plane starts from 0 and accelerates forward by 6 until the speed reaches 60 m/s. So the first one is1/2 * 6 *10 *10 = 300; The second is 1/2*6*4*4=48.