Dear EarthTalk: I recently heard about a cafe in the Netherlands that harvests so-called “kinetic” energy from its revolving door to power its interior lights. Is there potential for “kinetic” energy ...

In this video, we explain the Work-Energy Principle and how to determine the work done on an object. Learn how force, displacement, and the angle between them come into play when calculating work, and ...

Physicists define “kinetic” energy as the energy of motion — as opposed to potential energy, which represents an object’s stored energy. While there isn’t much that’s practical that we can do with ...