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Work, Energy, and Power, Yun Hsun Chang - Coggle Diagram
Work, Energy, and Power
Work
Displacement
A vertical force can never cause a horizontal displacement; thus, a vertical force does not do work on a horizontally displaced object!!
Force
Forces can be categorized as internal forces or external forces. There are many sophisticated and worthy ways of explaining and distinguishing between internal and external forces.
Internal
Include the gravity forces, magnetic force, electrical force, and spring force
External
Include the applied force, normal force, tension force, friction force, and air resistance force
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Conservative
Because internal forces are capable of changing the form of energy without changing the total amount of mechanical energy.
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Negative work is when the force doesn't cause displacement, but hinders it.
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Stopping distance
The above equation depicts stopping distance as being dependent upon the square of the velocity. This means that a twofold increase in velocity would result in a fourfold (two squared) increase in stopping distance. A threefold increase in velocity would result in a nine-fold (three squared) increase in stopping distance. And a fourfold increase in velocity would result in a sixteen-fold (four squared) increase in stopping distance.
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Energy
Potential
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Elastic potential energy
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The elastic potential energy stored in springs (PEspring) and the gravitational potential energy (PEgrav) - the above equation is rewritten as
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Kinetic
The energy of motion. An object that has motion - whether it is vertical or horizontal motion - has kinetic energy.
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Scalar quantity, doesn't have direction.
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Power
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Some people are more power-full than others. That is, some people are capable of doing the same amount of work in less time or more work in the same amount of time.
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