JeffJeffBobeff, the special case of circular orbits only needs high-school algebra. There are high schools that teach newtonian mechanics (gravity and orbits) -- I went to one. (But we only did the math for circular orbits.)

Why is it frightening? I can go to any hardware store and buy things thousands of times deadlier. About all you can do with this is wave it in front of your Geiger counter to hear lots of ticks. Oh, and you can dye pottery green.