When multiplying conversion factors, make sure the only remaining units are the desired units.
0.45mi/min
Practice makes perfect
We want to express 27 miles per hour in miles per minute.
27 mi/h= mi/min
This means that we need to change miles per hour into miles per minute. To do so, we will use the fact that 1 hour is equal to 60 minutes. Let's write this relationship as a unit ratio.
60 min/1h
To perform the conversion, we need to multiply the speed in miles per hour by the unit ratio or its reciprocal. Remember, we want to arrange these ratios such that every unit we do not want gets canceled out, and only the units that we want will remain.
We found that the human run at a speed of 0.45 mile per minute.
Extra
Common Conversion Factors
Use the following tool to explore some of the most commonly used conversion factors. Conversions can be made both within or between the metric system and the imperial system, also known as the U.S. Customary System.
Around the world, people use conversion factors on a regular basis. You can read more about some practical applications of conversion factors in our original content.
