If there's anything I love to read, it's analysis of the commonplace items in our lives by physicists, engineers, and mathematicians. That's why I was attracted to a recent Wired Dot Physics post by physicist Rhett Allain in which he did a Tracker video analysis of the most important characters in Angry Birds -- the birds.
By using the official Angry Birds walkthrough videos on YouTube with Tracker, Allain was able to determine several important factors -- that the birds exist in a drag-