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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.
What is the average pitch speed for mens fast pitch softball? 110 mph? No, probably not.     Most of the top men's pitchers throw in the 80's. There have been some studies done, though, showing that a 85 mph fastpitch is like a â¦100 mph baseball pitch in terms of reaction time the hitter has.     Remember in baseball, the pitcher is 60' 6 from home plate.