A system consists of interacting objects A and B, each exerting a constant 3.0 N pull on the other. What is (delta)U for the system if A moves 1.0 m toward B while B moves 2.0 m toward A?

(II) Determine the escape velocity from the Sun for an object:

(a) at the Sun’s surface ( r = 7.0 x 10⁵ km , M = 2.0 x 10³⁰ kg);

(II) Determine the escape velocity from the Sun for an object:

(b) at the average distance of the Earth ( 1.50 x 10⁸ km . Compare (give factor for each) to the speed of the Earth in its orbit.