The magnitude of the force (F) times the magnitude of the displacement (d) in the same direction as the force
Potential energy
Energy associated with an object's potential to move due to an interaction with its environment
Types of potential energy
Gravitational
Elastic
Electric
A book held above the desk has potential energy
An arrow ready to be released from the bow has potential energy
Law of conservation of energy
In a closed, isolated system, energy can neither be created nor destroyed; rather, energy is conserved. Under these conditions, energy can change form but the system's total energy in all of its forms remains constant
Mechanical energy
The sum of the kinetic energy and potential energy of the objects in a system
Kinetic energy
Includes both the translational and rotational kinetic energies of the objects in the system
Potential energy
Includes the gravitational and elastic potential energies of the system
Work-energy theorem
When work is done on a system, the result is a change in the system's energy
