1. Determine the escape velocity from the
Sun for an object (a) at the Suns surface (r = 7.0 X 105km, M = 2.0
X 1030kg), and (b) at the average distance of the Earth (1.50 X 108km).
Compare to the speed of the Earth in its orbit.
2. Show that the escape velocity for any
satellite in a circular orbit is times its velocity.