Work is done when a force acts on a moving body ... triangle above will help you to rearrange the equation. Work done has the same units as energy - joules. This is because energy is the ability ...

For lack of a better name, scientists call this mysterious force dark energy. Unlike for dark matter ... theory of general relativity to make his equations fit with the notion of a static universe.

An elastic object, such as a spring, stores elastic potential energy when stretched or squashed. The extension of an elastic object is directly proportional to the force applied. This equation ...