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When multiplying conversion factors, make sure the only remaining units are the desired units.
65.88km/h
Let's start by writing the given statement. 60ft/s&= km/h In this exercise, we need to change feet per second into kilometers per hour. Since this will involve multiple conversion factors, let's organize them in a table.
| Starting Unit | Converted Unit |
|---|---|
| 1 foot | 0.305 meters |
| 1000 meters | 1 kilometer |
| 60 seconds | 1 minute |
| 60 minutes | 1 hour |
To perform this conversion, we need to multiply the given value by all of these conversion factors. Remember, we need to arrange these ratios such that every unit we do not want gets canceled out and only the units that we want will remain.
Multiply fractions
Cancel out common factors
Simplify quotient
Multiply
Calculate quotient
We found that 60ft/s is approximately equal to 65.88km/h. We can now complete the given statement. 60ft/s&=65.88km/h
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.