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14 Cards in this Set
- Front
- Back
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force
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a push or pull on an object that can cause it to change motion
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gravity
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a force that pulls any two objects toward one another- like you toward the center of the earth
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inertia
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tendency of a moving oject to stay in motion or a resting object to stay at rest
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friction
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force that slows the motion of moving objects
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energy
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the ability to do work
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potential energy
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energy that an object has because of position
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kinetic energy
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energy of motion
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mechanical energy
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kind of energy an object has because it is moving
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chemical energy
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energy that comes from chemical changes
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electrical energy
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energy that come from the flow of electricity
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work
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result of a force moving an object
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simple machine
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machine made of one or two parts
examples: wedge, lever, pulley |
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compound machine
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machine made of two or more simple machines
examples: harden shears, bicycle |
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complex machine
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machine made of many simple and compound machines
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