The aircraft A with radar detection equipment is flying horizontally at an altitude of 12.8 km and is increasing its speed at the rate of 1.89 m/s each second. Its radar locks onto an aircraft B flying in the same direction and in the same vertical plane at an altitude of 18.9 km. If A has a speed of 1030 km/h at the instant when 0 = 31, determine the values of and at this same instant if B has a constant speed of 1500 km/h. Answers: = D: = i i 18.9 km B 12.8 km m/s rad/s