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Ch. 5 vocab titi
Question | Answer |
---|---|
velocity- | the speed of an object in a particular direction |
acceleration- | the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change |
motion- | an object's change in position relative to a reference point |
speed- | the distance traveled divided by the time interval during which the motion occurred |
force- | a push or pull exerted on an object in order to change the motion of the object; force has a size and direction |
newton- | the SI unit for force |
net force- | the combination of all of the forces acting on an object |
friction- | a force that opposes motion between two surfaces that are in contact |