Backflip Calculation (again)

I've had a lot of folks ask me about the parts of my FMX backflip calculation that I claimed were too hard to show in Blogspot. Specifically they want to know about the part where I figured out that half the energy goes into rotating and half goes into upward motion, when someone is trying to cram in the most flips.

Rather than send it out one at a time, I've made some jpegs out of my notes. If you actually LIKE doing physics homework, you might enjoy these. Also, if you see an error, please let me know so I can fix it before the calculus police catch me.

-Buzz