A 60-kg satellite travels in free flight along an elliptical orbitsuch that at A, where ra = 20 Mm, it has a speed va = 40 Mm/h.What is the speed of the satellite when it reaches point B, whereTB = 80 Mm? Hint: See Prob. 14-82, where M, = 5.976(1024) kgand G= 66.73 (10-12) m?/(kg - s?).