The rocket is traveling in a free-flight elliptical orbit about the earth such that the eccentricity is e and its perigee is a distanced d as shown. Determine its speed when it is at point B. Also determine the sudden decrease in speed the rocket must experience at A in order to travel in a circular orbit about the earth.

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Given: e = 0.76 d = 9 x 10⁰ m G = 6.673 × 10-11 x N.- M₂ = 5.976 × 1024 kg 2 2 kg