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Ch 1 Phy Science
| Question | Answer |
|---|---|
| reference point | the starting point used to describe the location or position of an object |
| what is the difference between distance and displacement? | the distance an object moves is the actual length of it's path. Its displacement is the length of a line drawn from the initial position to the final position of an object |
| GPS | global positioning system |
| speed | a measure of the distance on object per unit of time |
| constant speed | the rate of change of position in which the same distance is traveled each second |
| instantaneous speed | speed at a specific instant in time |
| what happened October 14th, 1947? | Chuck Yager broke the sound barrier. he was a test pilot and had a very dangerous job. |
| average speed | total distance over total time |
| velocity formula | distance over time |
| velocity | the speed of an object in a particular direction - velocity changes if either the speed or direction changes |
| acceleration | the rate at which velocity changes--- to change velocity |
| how to calculate acceleration | A= Vt-Vi over ----- total time it takes to change velocity |
Created by:
isweb22
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