Folks, The 2012 physics B exam is available now from the College Board. Although it is an extremely difficult Physics B problem, I especially like #2 -- it's virtually identical to the first approach to the USIYPT problem called "astroblaster" that we did for the 2012 tournament in Oak Ridge, TN. My student who presented that problem at the tournament had better have gotten that right. :-)
Anyway, I spent the afternoon making up my own solutions. No guarantee as to correctness.
I can't post the solutions here due to a possible plague of lawyers. But since the College Board copyright statement says their materials can be used for "face-to-face teaching purposes," I can allow teachers to access them. The "pretty good physics -- secure" website is run by Gardner Friedlander, a Wisconsin teacher who's a veteran of many an AP reading. If you're not already a member, follow the instructions on its front page to join. Gardner will add you as quickly as he can.
(If you're a student, beg your teacher to join tomorrow.)
And once you join, here's the link to my solutions on PGP-secure. Have fun! Please send corrections when you find my mistakes... I'll guarantee I got a 5, but not that I got a perfect score. :-)