The simplest questions are often the best. Robert P Crease tries to answer one from a physics student in Kenya Seeking perfection Tennis balls are a low-cost way to explore simple physics concepts, ...

We're about halfway through the academic term at Union College, where I'm teaching introductory Newtonian physics using the Matter and Interactions curriculum. We just hit one of my favorite topics ...

Physics, especially the part about forces and motion, often feels like a maze of confusing concepts and formulas. If you’ve ever stared at a problem about an object moving or a force acting and ...