This website is a collection of interactive simulations and other materials for introductory physics created by Michael Freeman, a physics teacher at Somerville High School in Somerville, MA.
The simulations were created in the Desmos graphing calculator, something probably not meant for such things, but which the author nonetheless enjoys.
Feel free to use, share, and remix this content with attribution for non-commercial purposes, and distribute any contributions under the same license.
Buy me a coffee here if you find this valuable and have the means.
More interactive physics stuff that has inspired this content, in no particular order:
More good physics education stuff, in no particular order: