That’s all your answers right there. If answers are all that you love, then that’s what you shall receive (Princess Leia said that). Let’s get to the calculations.
What is Low Earth Orbit?
I’m not going to give a full physics lesson — that would take too long. Instead, I’ll assume you already know some basic stuff. So, I will start with an object moving around a planet (it could be any planet) a height h above the surface. Note: for Low Earth Orbit, this height is about 400 kilometer.
Here is a diagram (not to scale).