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Chapter 3 vocab
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word | definition |
---|---|
force | a push or a pull |
gravity | the force of attraction that exsists between any two objects |
mass | the amont of matter in an object |
weight | a measure of the pull of gravity on an objects mass |
newton | in the metric system it is the unit usee to measure force or weight |
net force | the combination of all the forces acting on an object |
balanced forces | equal forces acting in opposite directions |
relative motion | the change in position of one object compared to the position of another |
frame of reference | the object an observer uses to detect motion |
speed | the distance an object moves in a certain period of time |
instantaneous speed | the speed at any given point |
speedomoter | a device that shows instantaneous |
velocity | a measure of both the speed and direction of a moving object |