1. The problem statement, all variables and given/known data [EDIT: My first statement of the problem was wrong.] 1. The space shuttle releases a satellite into a circular orbit 720 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs? 2. Relevant equations F=GmM/r^2 Fc = mv^2/r 3. The attempt at a solution Cannot figure out how to do this. I can solve for the orbital velocity (the speed at which the satellite will move around the Earth), but what does this have to do with the speed at which the space shuttle is moving relative to the Earth?