The space station revolves around the Moon in an elliptical orbit, and its shortest and greatest distances from the lunar surface are 2R and 4R, respectively, where R is the radius of the Moon. When the station is at the point least distant from the Moon, a rocket leaves it in a direction tangential to the station’s orbit. Determine the limits within which the starting speed of the rocket u relative to the station can change so that the latter continues to exist (i.e., does not crash into the Moon and fly away

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