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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 |