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scooby motion
motion flashcards
| Question | Answer |
|---|---|
| when an object changes position over time relative to a refrence point | motion |
| The distance traveled divided by the time interval during which the motion occured | speed |
| the speed of an object in a particular direction | velocity |
| the rate at which velocity changes over time; an object accelerates if speed, direction, or both change | acceleration |
| total distance/total time | formula for average speed |
| final velocity-starting velocity/ time it takes to change velocity | formula for average acceleration |
| a push or pull exerted on an object in order to change the motion of the object; force has size and direction | force |
| the si unit for force | newton |
| the combination of all of the forces acting on an object | net force |
| a force that opposes motion between two surfaces that are in contact | friction |
| when a force is applied to an object but doesnt move | static friction |
| friction between moving surfaces | kinetic friction |