Ask any engineer what the velocity of a point on a rigid body is, and they will correctly say that it's the time rate of change of a linear position vector. Ask any engineer what angular velocity is, ...

Sometimes I think Dan Meyer does this to me on purpose. He knows I can't not answer the question. Here is his question: Basically, from this video of a fan, how long would it take to stop? This isn't ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...