Learn how to calculate the force required to push a cart at constant velocity. This video explains the physics behind balanced forces, friction, and Newton’s First Law, showing why constant speed ...

Learn how to analyze the forces between three electric charges using fundamental electrostatics principles. This video explains force interactions, directions, and net force in a clear, step-by-step ...

It's still near the beginning of the semester for most introductory physics courses—so it's not too late to give some physics advice. I know it might be hard to believe—at least it is for me—but 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 ...