Posted by **Oriana** on Tuesday, December 14, 2010 at 5:24pm.

(a) What is the escape speed on a spherical asteroid whose radius is 570 km and whose gravitational acceleration at the surface is 3.1 m/s2?

(b) How far from the surface will a particle go if it leaves the asteroid's surface with a radial speed of 1000 m/s?

(c) With what speed will an object hit the asteroid if it is dropped from 1000 km above the surface?

I know how to do the first question (conservation of mechanical energy): however, I have no idea how to do the other two problems

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