Term
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Definition
| Any time you exert a force on an object and it moves some distance. |
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Term
| In order to do work on an object, the force that you exert must be in the same direction as the object's ________. |
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Definition
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Term
| The work you do on an object depends on the ______ you exert on an object and the ________ it moves. |
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Definition
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Term
| What is the equation for work? |
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Definition
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Term
| Work is measured in what units? |
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Definition
| Newtons x meter (N m) or Joules (J) |
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Term
| What is the equation for power? |
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Definition
| power = work or energy transferred/time |
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Term
| What are the units for power? |
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Definition
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Term
| Machines work by changing the ____ or _________, or both of the _____ ______. |
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Definition
- size
- direction
- force applied
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Term
| When you use a ramp to elevate an object, you ________ the distance the object travels. This lowers the amount of force you have to exert to accomplish the same amount of work. |
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Definition
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Term
| Some machines take a larger force and make it ______. |
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Definition
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Term
| What is the Mechanical Advantage equation? |
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Definition
| output FORCE/input FORCE=m.a. |
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Term
| What is the equation for efficiency? |
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Definition
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Term
| What is the M.A. equation for an inclined plane? |
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Definition
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Term
| What is the M.A. equation for a wedge? |
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Definition
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Term
| What is the M.A. equation for a wheel and axle? |
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Definition
| radius of wheel/radius of axle |
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Term
| What's the M.A. equation for a pulley? |
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Definition
| count the sections of rope, then subtract one for the section you pull down |
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Term
| What's the equation for kinetic energy? |
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Definition
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