If you did not push the physics book, the book remains still (static) and the net force on the book is zero . Electric current and activity in electric circuits occurs because of a net electric force ...

A force is a push or a pull that acts on an object due to the interaction with another object. Force is measured in newtons (N). Forces are divided into contact forces and non-contact forces.

Do you need some practice with force diagrams for your introductory (or advanced) physics course? Here are three questions (and the last one is awesome) about the motion of a bike as it is pulled ...

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

You're sitting in physics class, working on a traditional problem involving forces and acceleration, when you start to wonder where these terms even came from. Were they just dreamed up to bring ...

The violent collisions that are a hallmark of and problem for the NFL involve frequently misunderstood physics of momentum and force. And thinking about why those points are misunderstood makes a ...