This month's The Physics Teacher (TPT) includes my most recent contribution to Paul Hewitt's "Figuring Physics" panel. Figuring Physics questions are not easy to develop, and many good questions are not good Figuring Physics questions.
Here's a link to the page that will give you access to downloading a PDF of the panel.
January 2014 Figuring Physics
Apparently TPT now waits a month before revealing the answer panel. So you're on your own for now.