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15 Cards in this Set
- Front
- Back
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work
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product of force and displacement in direction of force
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force
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agent that results in accelerating or deforming and object
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displacement
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change in position, a vector quantity
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joule
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si unit of energy (in work or heat) equal to one nano meter
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energy
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non material property capable of causing changes in matter
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power
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rate of doing work
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rate
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•a magnitude or frequency relative to a time unit
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watt
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unit of power, one joule per second
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machine
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device that changes force needed to do work
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effort force
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force exerted on a machine
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resistance force
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force exerted by a machine
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mechanical advantage
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ratio of resistance force to effort force in a machine
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ideal mechanical advantage
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in a simple machine, the ratio of effort distance to resistance distances
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efficiency
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ratio of output work (for energy) to input work (or energy)
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compound machine
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machine consisting of two or more simple machines
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