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PhysSciMOTION
11.1-11.3
Question | Answer |
---|---|
an object's change in position relative to a reference point | motion |
a system for specifying the precise location of objects in space and time | frame of reference |
the change in position to an object | displacement |
the distance traveled divided by the time interval during which the motion occurred | speed |
the speed of an object in a particular direction | velocity |
the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change | acceleration |
an action exerted on a body in order to change the body's state of rest or motion; has magnitude and direction | force |
a force that opposes motion between two surfaces that are in contact | friction |
the force that resists the initiation of sliding motion between two surfaces that are in contact and in rest | static friction |
the force that opposes the movement of two surfaces that are in contact and are moving over each other | kinetic friction |