CLASSICAL MECHANICS A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site energy A measure of the ability to do work – for example, to lift a body against gravity or drag it against friction> or to accelerate an object. An intrinsic property of everything in the universe, including radiation, matter (see mass-energy relationship), and, strangely enough, even empty space (see quantum vacuum). Related category    • CLASSICAL MECHANICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP