Calculating escape velocity
Let me preface this by saying that this isn't for a class or for anything where I need to exhibit my prowess at physics, this is a "just for fun" thing.
That being said, I am a total idiot when it comes to physics. I am trying to figure out what speed something would have to be traveling to break orbit/be at escape velocity if it were starting from a point that's about 4600 km from Earth.
I've been staring at Wikipedia pages and physics help pages for the last day or so, and it's like they're in a foreign language. Can anyone help me out?