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Term | Definition |
---|---|
Motion | Its position changes relative to another object. |
Reference point | A place or object used for comparison to determine if something is in motion. |
When is an object in motion? | If it changes position relative to a reference point. |
International system of distance. | The length of the path between two points. |
Speed | The distance the object moves per unit of time. |
How do you calculate speed? | Divide the distance the object travels by the amount of time it takes to travel that distance. |
Average speed | Divide the total distance traveled by the total time. |
Instantaneous speed | The speed at which an object is moving at a given instant in time. |
How do you describe velocity? | When you know both the speed and direction of an object's motion. |
Velocity | Speed in a given direction. |
How do you graph motion? | A line graph in which you plot distance versus time. |
Slope | The steepness of a line on a line graph. |
Acceleration | The rate at which velocity changes. |
What is acceleration? | Increasing speed, decreasing speed, or changing direction. |