1. The problem statement, all variables and given/known data Object A is at rest relative to the earth and we want to put it in orbit around the earth, how much energy is necessary to do so? 2. Relevant equations Ki+Ui=Kf+Uf+energy input 3. The attempt at a solution what i dont understand is, if the body is at rest, Ki=0, but dont we need a certain inicial velocity to put it in orbit? So shouldn't Ki have a value?