It looks like this: Trust me, you'll find this equation useful in just a little bit. OK, now for the second big idea, the work energy principle. It states that, for a single particle, the work ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I ...

Why? It's because that plot essentially comes from the work-energy principle, and this is a scalar equation. It doesn't depend on direction, so you don't get a direction. But in the end ...

Special relativity applies to situations involving high speeds, massive energy, and vast distances — all in the absence of gravity. For gravity, Einstein expanded on this work a decade later ...