The Physics Classroom 2009 Answer Key Work Energy And Power. If you don t understand an explanation that is given in this section you may want to go back and review the lesson that the question came from. True a n m is equal to a joule.
True work is a form of energy and in fact it has units of energy. Work energy and power the physics classroom 2009 page 2 the amount of work w done on an object by a given force can be calculated using the formula w f d cos θ where f is the force and d is the distance over which the force acts and θ is the angle between f and d. Pe i w nc 0.
Mathematically it is computed using the following equation.
Concepts of work kinetic energy and potential energy are discussed. The initial state is the car traveling at a high speed and the final state is the car at rest. These concepts are combined with the work energy theorem to provide a convenient means of analyzing an object or system of objects moving between an initial and final state. True a n m is equal to a joule.
