Distance traveled by an object per unit of time is called speed. Speed is a scalar quantity. It is always greater than or equal to zero.
Direction is not associated with this physical quantity.
Speed at any instant is called instantaneous speed.
Speedometer in vehicles show instantaneous speed viz. speed at any instant of time.
Speed at any instant = derivative of traveled distance with respect to time
= dx/dt.
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Speed describes the distance traveled by an object divided by the time in which the distance was traveled, if the direction is not specified.
It is called speed Speed = Distance/Time
speed
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The distance traveled by an object divided by the time it takes to travel that distance is called the average speed, r, if you are also considering its direction, its average velocity. Velocity = distance in one direction/time Speed = distance/time For example: A car that travels 60 miles in a time of 2 hours has a speed of 30 miles per hour.