Gravity, Forces, and Motion: Definitions
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10 terms
Terms | Definitions |
|---|---|
 Acceleration | The rate at which velocity changes over time (the unit is usually meters/second/second). |
| Centripetal Force | A force that acts on an object moving in a circular path and is directed toward the center around which the body is moving. (Ex: Earth and Sun) |
| Gravity | The attractive force that objects exert on each because of their mass. |
| Gravitational Potential Energy | The amount of energy an object has based on its position above Earth's surface. |
| Inertia | The resistance of objects to changes in motion. |
| Motion | A change in position over time. |
| Newton's First Law of Motion | Objects at rest remain at rest and objects in motion remain in motion (with the same velocity) unless acted on by an unbalanced force. |
| Newton's Second Law of Motion | The acceleration of an object increases with increased force on that object and decreases with increased mass of the object. |
| Velocity | Speed in a specific direction. |
| Weight | A measure of the force of gravity on an object. |
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