"Ever wondered how forces and energy come into play when Iron Man crashes into sand? In this video, we use the work-energy principle to analyze the forces at work in a high-impact sand crash scenario, ...

The Work Energy Principle is one of the big ideas in introductory physics courses. It's so big that the textbook presentation can get a little confusing - but it doesn't have to be that way. I haven't ...

Kinetic energy is the energy of mass in motion. The kinetic energy of an object is the energy it has because of its motion. For example, in order to lift a heavy object, we must do work to overcome ...

A natural resource is defined as a form of energy and/or matter which is essential for the functioning of organisms, populations and ecosystems. In the case of humans, a natural resource, in his words ...

You spent Sunday on the couch, skimming your social feeds and watching HGTV. Monday at work was a different story; your job involves creative problem solving and other difficult mental activities.