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| rate at which work is done |
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| when a force acting on an object causes a displacement of that object, work is done on that object |
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| unit of power ;; joule per second |
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| the stored energy of an object due to its relative position (height with respect to a 0 position |
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| energy of an object due to its motion |
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| Law of Conservation of Mechanical Energy |
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Definition
| the total mechanical energy of a system remains constant when the only forces acting are conservative forces (gravitational and spring) |
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Definition
-when the force causing the displacement and the displacement are in the same direction
-angle between them is 0 degrees |
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| when the directions are opposite or when the angle between force causing displacement and displacement itself is 180 degrees |
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-when forces and displacement are perpendicular to each other at 90 degrees
-when force doesn't not cause the displacement
-when there is no displacement |
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| Two Main Components of Work |
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| Mechanical Energy Equation |
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Definition
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Term
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Definition
| the change in kinetic energy is equal to the net work done |
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| heat, sound, light, electricity |
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