Woot T-shirt Derby Time Again

Once again, it's time for the Woot T-shirt Derby. A few weeks ago, I decided to quit --- for reasons best not gotten into --- but a week later, I decided to un-quit --- because I was inspired by the theme. This week's theme is Physics and one of my favorite aspects of physics is how it applies to the game of pool. And I thought a couple images from pool would make a good T-shirt. So, I came up with this:

If you like it, you can vote for it by clicking here.