Airplane A is flying horizontally with a speed of 263 km/h which is increasing at the rate of 3.9 km/h each second and is towing the glider B, which is gaining altitude. If the tow cable has alength r = 56 m, and the cable is unreeling at the constant rate 7 = 2.1 m/s while 6= 20%is kept constant, determine the magnitudes of the velocity v and acceleration a of the glider. Answers: V= n km/h a= n m/s2