(a) Calculate the maximum rate at which a rocket can expel gases if its acceleration cannot exceed seven times that of gravity. The mass of the rocket just as it runs out of fuel is 75,000-kg, and its exhaust velocity is 2.40×103m/s. Assume that the acceleration of gravity is the same as on Earth’s surface ( 9.80m/s2 ). (b) Why might it be necessary to limit the acceleration of a rocket?

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