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14 Cards in this Set
- Front
- Back
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Energy |
The ability to do work. Potential Energy - Stored Energy at rest Kinetic Energy - Energy in Motion |
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Work |
The force used to move something |
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Force |
A push or pull that causes an object to move, stop or change speed or direction. The greater the push or pull, the greater the change in motion. |
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Inertia |
The tendency of a still object to remain still (or at rest) and a moving object to remain in motion |
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Weight |
The measure of the force of gravity on an object |
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Mass |
The amount of matter in an object Objects with more mass are heavier than objects with less mass |
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Position |
The location of an object compared to surrounding objects (behind, below, left, right, ahead, above) |
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Motion |
Changing position of an object caused by force Objects in motion may speed up, slow down or change position |
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Speed |
How fast an object moves How fast an object moves or the distance an object moves in certain amount of time depends on the force acted upon it |
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Friction |
The force that works against motion between surfaces of objects that are touching |
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Friction |
May cause the object to slow down or stop Friction creates heat A moving object continues to move unless there is friction The smoother the surface, the less friction it has |
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Gravity |
The force that pulls objects towards one another |
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Potential Energy |
energy at rest an object at rest that is about to move Ex - a bird sitting on a wire, throwing a ball up in the air, person sitting completely still (sleeping) |
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Kinetic Energy |
energy of motion Ex - ball falling in the air, yo-yo spinnning, rushing water, writing these notes |
