13-121. The rocket is in free flight along an elliptical
Chapter 13, Problem 13-121(choose chapter or problem)
13-121. The rocket is in free flight along an elliptical trajectory /tM.The planet has no atmosphere, and its mass is 0.70 times that of the earth. If the rocket has an apoapsis and pcriapsis as shown in the figure, determine the speed of the rocket when it is at point A.
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