Work-energy theorem states that the work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle (or) The net work done on a system is equal to the change in Kinetic energy . Work-Energy Theorem The work W done by the net force on a particle equals the change in the particle’s kinetic energy KE. W = K E W = K E W = 1 2 m v f 1 2 m v i W = 21mvf − 21mvi where v i and v f are the speeds of the particle before and after the application of ... Learning Objectives By the end of this section, you will be able to: Explain work as a transfer of energy and net work as the work done by the net force. Explain and apply the work-energy theorem . Learn the definition and derivation of the work - energy theorem , which states that the work done by the net force on a particle equals the change in its kinetic energy . See examples, key points, and key terms related to work and energy .
