Quick Answer
To calculate the speed of a running deer, measure the distance it travels in a specific time frame, such as 10 seconds, and use the formula speed = distance / time. This method involves knowing the deer's distance and the time it took to cover that distance.
Measuring Distance
When measuring the distance a deer travels, use a rangefinder or calibrate a laser measuring device to the terrain. For example, if the deer travels 70 yards in 10 seconds, the speed can be calculated. Measure multiple distances and times to ensure accuracy.
Calculating Speed
To calculate the deer’s speed, use the formula speed = distance / time. Plug in the numbers: speed = 70 yards / 10 seconds = 7 yards per second. To convert yards per second to miles per hour, multiply by 2.25 (since 1 yard per second is approximately equal to 2.25 miles per hour). So, 7 yards per second multiplied by 2.25 equals approximately 15.75 miles per hour.
Understanding the Importance of Speed
Knowing the deer’s speed is crucial for accurate shot placement. A moving target requires a lead of approximately 10-12 inches for every 50 yards of distance and 1-2 seconds of lead time at 100 yards. The more accurate the speed measurement, the more accurate the shot placement will be.
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