Car Crash

I have stumbled across a couple of websites which explore the science behind a car crash. This is a subject I have become familiar with over the past week after I had someone crash into the back of my car while stopped at a red light. The first website explores stopping distances and the second explores the forces on impact. Excuse the miles and feet references, it's an American website.

http://www.mrmont.com/games/brakingdistance.html

http://www.mrmont.com/games/carcollision.html