Speed - rate of change of distance, measure how quickly something moves., Distance - a measurement of how far apart objects are, Displacement - a measurement of the change in position of a moving body; a line connecting start and end points specified in terms of length and direction, Scalar quantity - a quantity that has size but not direction, Vector quantity - a quantity that has size and direction, Precision - how close measured values are together, also called uncertainty, Accuracy - how close a measurement or calculation is to the true value, Velocity - the rate of change of displacement , the speed of something in a given direction,

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