How work and energy are correlated?

Work is the measurement of the force on an object that overcomes a resistive force (such as friction or gravity) times the distance the object is moved. If there is no distance, there is no work, no matter what the effort. In certain situations there is a relationship between that work and mechanical energy (as opposed to heat or radiant energy). When you accelerate an object, you are doing work against inertia, such that the work equals the change in kinetic energy of the object. Change in KE means you have accelerated the object. When you accelerate an object, you are changing its velocity and thus its KE. By accelerating the object over a period of time, you are moving the object some distance, while changing its veleocity. Thus, you arwe doing work against inertia you are doing work against inertia, such that the work equals the change in kinetic energy of the object. When you are doing work against continuous resistive forces, such as gravity or spring tension, work done equals the change in potential energy of the object. read less