To calculate the average speed of a runner during a half-marathon, you can use the formula for average speed:
\[ \text{Average Speed} = \frac{\text{Total Distance}}{\text{Total Time}} \]
A half-marathon is typically 13.1 miles or approximately 21.1 kilometers.
Here’s how to calculate the average speed step by step:
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Determine the Total Distance: The total distance of a half-marathon is 13.1 miles.
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Measure the Total Time: Record the time it took the runner to complete the half-marathon. For example, if the runner finished in 1 hour and 45 minutes (which is 105 minutes), you will convert that time into hours for the average speed calculation.
- Convert 105 minutes to hours: \[ \text{Total Time in hours} = \frac{105 \text{ minutes}}{60} = 1.75 \text{ hours} \]
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Calculate Average Speed: \[ \text{Average Speed} = \frac{13.1 \text{ miles}}{1.75 \text{ hours}} \approx 7.49 \text{ miles per hour} \]
If you provide the actual finishing time, I can help you calculate the specific average speed.
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