The space station revolves around the Moon in an elliptical orbit, and its shortest and greatest distances from the lunar surface are R and 7R, respectively, where R is the radius of the Moon. When the station is at the point furthest from the Moon, a rocket leaves it in a direction tangential to the station’s orbit. As a result of the rocket's departure, the station moves into a circular lunar orbit. Determine the starting speed of the rocket u relative to the station. The station's mass is nine times greater

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