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Ch. 12 Holt
Work and Energy
Term | Definition |
---|---|
Work | the transfer of energy to a body by the application of a force that causes the body 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 measures 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. |
Potential Energy | the energy that an object has because of the position, shape, or condition of the object. |
Kinetic Energy | the energy of a moving 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. |