You will need to use the Momentum Principle to do the first part of this problem, and the Energy Principle to do the second part.
A satellite of mass 4500 kg orbits the Earth in a circular orbit of radius of 9.2x10^6 meters http://www.webassign.net/images/multiply.gif[/IMG] 106[/COLOR] m (this is above the Earth's atmosphere).The mass of the Earth is 6.0 1024 kg.
What is the speed of the satellite?
v = 1 m/s
What is the minimum amount of energy required to move the satellite from this orbit to a location very far away from the Earth?
energy = 2 J
Not really sure what to do here, I feel as though I need more information to work this. Help is much appreciated.