Force and Motion
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18 terms
Terms | Definitions |
|---|---|
 force | a push or pull that causes an object to move, stop, or change direction |
| gravity | the force that pulls two objects towards each other |
| inertia | The tendency of an object to remain in motion or to stay at rest unless acted upon by an outside force. |
| friction | a force between surfaces that slows objects down or stops them from moving |
| energy | the ability to do work |
| potential energy | the energy an object has because of its position |
| kinetic energy | the energy of motion |
| mechanical energy | the kind of energy an object has because it can move or it is moving; both potential and kinetic energy |
| chemical energy | energy that comes from chemical changes |
| electrical energy | energy that comes from the flow of electricity |
| light energy | a form of energy that makes it possible for us to see. |
| heat energy | energy which causes a rise in temperature |
| sound energy | energy that we hear |
| work | the result when a force causes an object to move |
| simple machines | machines that have only one or two parts |
| compound machines | machines that are made of two or more simple machines |
| complex machines | a machine that is made of many simple and compound machines |
| machine | a device that makes work easier |
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