### Formula

v

speed

dx

distance traveled by the object

dt

duration of the time interval

v

speed

dx

distance traveled by the object

dt

duration of the time interval

In kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity. The average speed of an object in an interval of time is the distance traveled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero. Like velocity, speed has the dimensions of a length divided by a time; the SI unit of speed is the meter per second.

dx

dt

v

Precision

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