Surprising result of calculating speeds of two cars hitting a tree

This takes me back pleasantly to the late 90s, when web design was the Wild West and I came across a great text-based HTML editor called Arachnophilia. They were restless times, so I moved on eventually, but I made good use of it for several months.

Anyhoo, the author, Paul Lutus, had a beautiful example of a pre-millennial personal website, covering all manner of topics, and I’d regularly dive in when I had time to spare. Definitely Happy Mutant stuff. The site’s still there, still updated (as is the software), including a demonstration of this very phenomenon: https://arachnoid.com/lutusp/auto.html.

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