An Earth satellite moves in a circular orbit 605 km above the Earth's surface. The period of the motion is 96.6 min. (a) What is the speed of the satellite? a=v^2/r and T=2*pi*r/v 3. The attempt at a solution So far I've tried converting my km to m and min to sec. I then tried using the T equation as V=2*pi*r/T to get the speed, but that isn't correct. I suspect that the 605km isn't the right radius since it's from the earths surface, but I tried adding the radius of the earth to it and that wasn't correct either (not to mention that the radius of the earth isn't given, so that pretty much says it's not a factor). I don't really know where to go now.