For air and marine travel the knot is commonly used. So mathematically speed is equal to distance covered by the object divided by time which it takes to cover the distance. 1 Hz 1 cycles 1 s -1.
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Speed is defined as the distance covered by an object per unit time. It is a vector quantity having both magnitude and direction. Instantaneous speed actually is a velocity calculation that will be discussed in the velocity section. Speed fracDistanceTime Dimensional formula of Distance M 0 L 1 T 0 Dimensional formula of time M 0 L 0 T 1 Dividing the dimensional formula of distance by the dimensional formula of time we get.