This is an online video of an MIT momentum lecture that I found, and that I found to be quite useful for what we learned in class. The lecture focuses on everything that we talked about in AP-C, but it was very interesting to hear the lesson from another professor's perspective. In this video are the definition of momentum, how it relates to force, as well as conservation of momentum and kinetic energy. One thing that I found particularly useful in the video were the derivations that the professor used, which helped me understand much better the relationships between multiple concepts such as force and momentum, force and impulse, etc. The video is almost an hour, so watching the whole thing in one sitting isn't highly recommend, but its great to skim through and revisit all the topics we covered and gain a little bit better understanding on some confusing ideas.