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Speed = distance divided by time
Speed = Distance divided by Time
When navigating math is most commonly used to calculate distance, speed, and time. It is possible to estimate time of arrival, if you know the distance and the speed you are traveling. It is possible to estimate how fast you are traveling, if you know the time and the distance. It is also possible to estimate how far you have gone, if you know your speed and your time.
You can calculate a speed by dividing a distance by the time it takes to cover that distance. If you want the instantaneous speed (for situations of variable speed), you need to calculate the distance and time for a fairly short time interval (ideally, the limit, when the time approaches zero).
Average speed = (distance covered) divided by (time to cover the distance)