Exercises 1. The radius of the moon is roughly 1080 miles. The acceleration of gravity at the surface of the moon is about 0.165g, where g is the acceleration of gravity at the surface of the earth. Determine the velocity of escape for the moon. ANS. 1.5 miles/sec. 2. Determine, to two significant figures, the velocity of escape for each of the celestial bodies listed below. The data given are rough and g may be taken to be 6.1(10)-> mile/sec r24. 2xyy' = y2 – 2x. Find the solution that passes through the point (1, 2). ANS. y2 = x(5 - x? ANS. x2 = y(x + 2 rANS 4. y' = y - xye-2