Term
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Definition
| a force in which the work it does on a moving object is independent of the path between the object's initial & final positions; a force which does no net work on an object moving around a closed path, starting & finishing at the same point |
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Term
| The kind of path which begins & ends at the same place is called a _____ path |
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Definition
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Term
| The concept of _____ is not defined for a non-conservative force |
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Definition
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Term
| Is friction a conservative or a non-conservative force? |
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Definition
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Term
| Is gravity a conservative or a non-conservative force? |
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Definition
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Term
| total mechanical energy "E" |
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Definition
| the sum of kinetic energy & potential energy |
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Term
| If no non-conservative forces act on an object, the total mechanical energy _____ |
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Definition
| remains constant all along the path between the initial & final points |
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Term
| A quantity that remains constant throughout motion is said to be _____ |
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Definition
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Term
| principle of conservation of mechanical energy |
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Definition
| the fact that the total mechanical energy is conserved when "Wnc" = 0J |
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Term
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Definition
| incorporates both the concepts of work & time; work done per unit time; average rate at which work "W" is done; denoted "P bar" |
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Term
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Definition
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Term
| Is power a scalar or a vector? |
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Definition
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Term
| the principle of conservation of energy |
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Definition
| energy can neither by created nor destroyed, but can only be converted from one form to another |
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Term
| The work done by a variable force in moving an object is equal to _____ |
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Definition
the area under the graph of:
F(cos "theta") versus "s" |
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