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How to Calculate Fastball Reaction Time

by
author image W D Adkins
Based in Atlanta, Georgia, W D Adkins has been writing professionally since 2008. He writes about business, personal finance and careers. Adkins holds master's degrees in history and sociology from Georgia State University. He became a member of the Society of Professional Journalists in 2009.
How to Calculate Fastball Reaction Time
A batter connects on a fastball. Photo Credit IPGGutenbergUKLtd/iStock/Getty Images

If you play baseball or fast pitch softball, you are all too familiar with the difficulty of hitting a well thrown fastball. It takes less than a half second for a fastball to travel from the pitcher’s hand to home plate. That is all the time you have to react to the pitch. The average person’s reaction time is around 0.75 seconds. This means you must start your swing before the pitcher releases the ball and adjust once the ball has actually been thrown.

Step 1

Use a baseball radar gun to measure the speed of a pitcher’s fastball. To take an accurate measurement, you should be in line with the ball’s path. That is, the pitch should be coming directly at you or traveling away from you.

Step 2

Convert miles per hour to feet per second. Multiply the miles per hour of the fastball by the number of feet in one mile, which is 5,280. Divide by the number of seconds in an hour, which is 3,600. For example, if a fastball travels 95 miles per hour, you have 95(5280/3600) = 139.33 feet per second.

Step 3

Divide the distance from the pitching rubber to home plate by the speed of the fastball in feet per second. On a major league ball field this distance is 60 feet 6 inches, or 60.5 feet. For a pitch traveling 139.33 feet per second, you have 60.5/139.33 = 0.434 seconds. Your fastball reaction time is therefore equal to 0.434 seconds.

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