Physics Ch 3&4
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26 terms
Terms | Definitions |
|---|---|
 position-time graph | a graph that shows how position depend on time |
| rise | the vertical separation of any two points on a curve |
| time interval | the difference between two clock readings |
| reference point | the positions of objects can be compared to a chosen position |
| clock reading | a measurement of time |
| instaneous velocity | on a position-time graph, the slope of a tangent to the curve is the ________ at that instant |
| displacement | the change in position of an object |
| frame of reference | a way of viewing positions, based on the reference point that is chosen |
| run | the horizontal separation of any two points on a curve |
| position | the separation between an object and a reference point |
| distance | the separation between two objects |
| factor-label method | the method of converting units using dimensional analysis |
| constant velocity | an object that has the same average velocity for all time intervals is moving at ______ |
| scalar | a quantity that has only magnitude |
| speed | the magnitude of velocity |
| slope | the ratio of rise to run is the ____ of a curve of a graph |
| instantaneous position | the position of an object at one and only one time |
| vector | a quantity that has both magnitude and direction |
| average velocity | the change of position divided by the time interval over which the change occurred |
| velocity | expression of both the speed and direction of motion |
| velocity time graph | a graph that shows how velocity depends on time |
| initial velocity | the velocity when the clock reading is zero |
| instantaneous acceleration | on a velocity-time graph, the slope of a tangent to the curve is the ____ at that point |
| final velocity | the velocity after acceleration has occurred |
| constant acceleration | acceleration that does not change in time |
| acceleration due to gravity | the constant acceleration that acts on falling bodies |
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