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Now, since we have our distance and our time, we can use the equation to find the answer. The equation to find how fast you throw a baseball without using a radar gun is: Distance / Time = Speed Now since we are trying to calculate how fast we throw a baseball, we usually use mph.sing the formula above D/T=S .0106 / .000116 = 91.379 mph So, to calculate how fast you throw a baseball in mph without using a radar gun, this is the formula you should use.
It takes less than a half second for a fastball to travel from the pitcherâs hand to home plate. That is all the time you have to react to the pitch. The average personâs 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.n 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.