I can't help myself. When I'm out in the real world and I see something cool, I have to turn it into a physics problem. It's just what I do. In this case, I was changing planes in the Atlanta airport.

Here is what I like to do (for fun). Take a classic physics problem and go over the solution. After that, I take it just one step further to see what happens. Today, let's start with this problem (you ...

Physics, especially the part about forces and motion, often feels like a maze of confusing concepts and formulas. If you’ve ever stared at a problem about an object moving or a force acting and ...