Convert 120 km to miles per hour.
Understand the Problem
The question is asking to convert a speed measurement given in kilometers per hour to miles per hour. This involves applying a conversion factor between kilometers and miles.
Answer
To find speed in miles per hour, use $ \text{Speed (mph)} = v \times 0.621371 $.
Answer for screen readers
To convert a speed of $v$ km/h to miles per hour, the resulting speed is calculated as:
$$ \text{Speed (mph)} = v \times 0.621371 $$
Steps to Solve
- Identify the conversion factor
To convert kilometers per hour (km/h) to miles per hour (mph), we need to know the conversion factor. The conversion is based on the fact that 1 kilometer is approximately equal to 0.621371 miles.
- Set up the conversion
If we have a speed in km/h, say $v$ km/h, we can convert it to mph using the formula:
$$ \text{Speed (mph)} = v \times 0.621371 $$
- Calculate the result
Now, we'll plug the value of $v$ km/h into the equation from step 2 to find the speed in mph.
- Round the result if necessary
Depending on the problem requirements, we may want to round the final answer to a certain number of decimal places for clarity.
To convert a speed of $v$ km/h to miles per hour, the resulting speed is calculated as:
$$ \text{Speed (mph)} = v \times 0.621371 $$
More Information
This conversion is useful in various scenarios, such as when driving in different countries or interpreting speed limits. Knowing that 1 km is approximately 0.621371 miles helps in quickly understanding speed conversions.
Tips
- Forgetting to multiply by the conversion factor.
- Using the wrong conversion factor (0.621371 miles in 1 km).
- Not understanding how to round the numbers properly if needed.
