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Definition
The rate of motion, or the rate a which a body changes position. v=d/t
SI unit k/h |
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| The rate of motion at a given instant in time - radar gun from a police man! |
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Speed that does not change.
A flat line on an acceleration graph. |
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Definition
| A rate of motion determined by difiding the total distance traveled by the total travel time. (Mean) |
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Definition
| The speed and direction of a moving body. 30 k/h north |
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Definition
The rate of change in velocity. (direction or speed)
(+) speeding up
(-) slowing down
a change in direction |
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Definition
| A push or a pull one body exerts on another body. |
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Definition
| Forces that are equal in size and OPPOSITE in direction. Balanced forces acting on a body do not change the motion of the body. |
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Definition
| The sum (yep add) of the forces on an object when unbalanced forces are applied to it. A net force changes the object's speed, direction or BOTH. |
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Definition
| The tendency of an object to resist any change in its motion. |
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Term
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Definition
The force that opposes motion between two surfaces that are touching eachother.
Rolling friction:balls, wheels...
Sliding friction: flat surfaces
Fluid friction: air or water...
Static Fricition: being still. |
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Term
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Definition
The amount of matter in an object.
Measured in grams (kilograms....) |
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Term
| NEWTON'S 1ST LAW OF MOTION (2 parts) |
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Definition
An object moving at a constant velocity keeps moving at that velocity unless a net force acts on it.
An object at rest stays at rest unless a net force acts on it. |
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