Measuring speed requires time (T) and a known distance (D). Using the formula distance = rate x time (D=R*T), one determines the average speed by dividing distance by time, or R = D/T. This method assumes the object being measured is already in motion.
Continue ReadingTime units are always in hours, minutes or seconds. Distance units can be either metric or imperial.
Select two points, A and B, to represent the known distance. It should be long enough to make an accurate time measurement. The shorter the distance, the more precise the time measurement must be.
As the object passes point A, start measuring the time. Using second hands on a watch or stopwatch increases accuracy when using shorter distances.
Note the elapsed time the object took to travel between the two points.
Using the formula R = D/T, determine the average rate of speed. This is usually expressed as distance per time unit.
It takes a healthy person about 10 minutes to walk 1 kilometer at a speed of 6 kilometers per hour. Athletes complete it in less than five minutes. Most people who are not physically fit take 12 to 15 minutes to walk a kilometer.
Full Answer >Converting a speed that is expressed in miles per hour to meters per second requires converting the linear measurement by multiplying the speed by 1,609.34 meters per mile. The speed must then be divided by 3,600 to convert the time from hours to seconds.
Full Answer >A speed of 299 kph is equal to 185.8 mph. To arrive at these numbers, it is necessary to convert kilometers to miles. A kilometer is just over .62 mile, which means that any measurement of distance expressed in kilometers can be converted to miles by multiplying it by .62.
Full Answer >Wind speed is measured using a meteorological device known as an anemometer. This device measures wind velocity and is an important tool for meteorologists who need to study weather patterns.
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