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Work
The transfer of energy to an object by the application of a force that causes the object to move in the direction of the force
Power
A quantity that measures the rate at which work is done or energy is transformed
Mechanical Advantage
A quantity that expresses how much a machine multiplies force or distance
Simple Machine
One of the six basic types of machines, which are the basis for all other forms of machines
Compound Machine
A machine made of more than one simple machine
Energy
The capacity to do work
Potential Energy
The energy that an object has because of the position, shape, or condition of the object
Kinetic Energy
The energy of an object due to the object’s motion
Mechanical Energy
The amount of work an object can do because of the object’s kinetic and potential energies
Efficiency
A quantity usually expressed as a percentage, that measures the ratio of useful work output to work input