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17 Cards in this Set
- Front
- Back
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Acceleration |
Equals the change in velocity divided by the time for the change to take place; occurs when an object speeds up, slows down, or turns. |
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average speed |
equals the total distance traveled divided by the total time taken to travel the distance. |
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inertia |
tendency of an object to resist a change in its motion. |
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instantaneous speed |
the speed of an object at one instant of time. |
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Law of conversation of momentum |
States that the total momentum of objects that collide with each other is the same before and after the collision. |
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mass |
amount of matter in a object. |
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momentum |
a measure of how difficult it is to stop a moving object. |
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speed |
equals the distance traveled divided by the time it takes to travel that distance. |
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velocity |
speed and direction of a moving object. |
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motion |
speed that has a changing position. |
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gravity |
exists between any two objects that has mass; is always attractive and pulls objects towards each other. |
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force |
a push or pull |
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friction |
force that acts to oppose sliding between two surfaces that are touching. |
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balanced force |
one or more forces whose effects cancel each other out and do not change the motion of an object. |
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unbalanced force |
one or more forces acting on an object that do not cancel, and cause the object to accelerate. |
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position |
when something is in motion, it changes motion. |
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reference point |
determining whether something changes position. |
