(a) Use equation (21) to show that the escape velocity of the rocket is given by for al...

(a) Use equation (21) to show that the escape velocity of the rocket is given by for all times t.]

(b) The result in part (a) holds for any body in the solar system. Use the values to show that the escape velocity from the earth is (approximately)

(c) Find the escape velocity from the moon if the acceleration of gravity is 0.165g and R = 1080 miles.