(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 x 10³ m/s. Assume that the acceleration of gravity is the same as on Earth's surface (9.80 m/s²).

(b) Why might it be necessary to limit the acceleration of a rocket?