After this lesson, you should be able to:

• Define work done on an object
• Understand work done as an energy transfer
• Calculate the net work done on an object as the sum of the work done by each force acting on the object
• Calculate the net work done on an object as the work done by the net force acting on the object
• Understand positive work done on a system as energy transferred to the system, increasing the energy of the system
• Understand negative work done on a system as energy transferred away from the system, decreasing the energy of the system
• State the work-energy theorem as “the net work done on an object equals the change in the kinetic energy of the object”
• Apply the work-energy theorem to objects moving on horizontal and incline planes, with and without friction