Term
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Definition
| push or pull of an object |
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Term
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Definition
combination of all of the forces acting on an object
(tug-o-war 2 sets of forces on the rope) |
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Term
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Definition
| These occur when the net force on an object is Zero. The object does not move in any direction. |
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Term
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Definition
| Occur when the net force on an object is not zero. The object moves because one or more of the forces is (are) greater than the others. |
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Term
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Definition
| unit we use to measure forces |
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Term
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Definition
| when an object changes its position over time |
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Term
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Definition
| an object that appears to stay in place and you compare the motion of another object to it |
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Term
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Definition
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Term
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Definition
| speed of an object in a particular direction |
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Term
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Definition
| a change in velocity - either speed or direction or both |
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Term
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Definition
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Term
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Definition
(deceleration)
when something slows down |
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Term
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Definition
| when something changes direction |
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Term
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Definition
| a force that opposes (works against) motion between two surfaces that are touching |
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Term
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Definition
| this happens when one flat surface moves across another flat surface |
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Term
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Definition
| happens when a round object rolls across a surface |
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Term
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Definition
| occurs between liquids or gases and other objects |
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Term
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Definition
| this type of friction is observed when objects are not moving at all |
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Term
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Definition
a measure of how much force gravity is pulling on an object;
how much force you would need to pick up an object from the ground |
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Term
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Definition
| force of attraction between two objects that is there just because there is matter there |
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Term
| What is the SI unit for force? |
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Definition
| the newton, abbreviated N |
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Term
| relative directional terms |
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Definition
- right
- forward
- backward to the left
- upward
- downward
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Term
| "Law of Universal Gravitation" |
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Definition
| the larger the masses of the objects, the closer they are and the stronger the gravitational force between them |
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Term
| Who came up with the Law of Universal Gravitation? |
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Definition
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Term
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Definition
| hills and valleys of one surface sticking against the hills and valleys of the other surface |
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Term
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Definition
- using lubricant
- making the surfaces smoother
- use wheels that create rolling friction instead of sliding friction
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Term
| formula for average speed |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| distance divded by the amount of time it took to cover that distance |
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Term
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Definition
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Term
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Definition
| distance divided by speed |
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