45 degrees is definitely not the optimal launch angle in almost any circumstance, maybe only with a gale force wind at your back.They are dependent variables. A launch angle of 45 degrees is optimal. Then as you increase or decease the launch angle from 45 you will need to increase the exit velocity.
If you take this to twitter you can probably get an answer pretty fast. Also if someone has a HitTraxx you can get some meaningful data from them.....
45 degrees is definitely not the optimal launch angle in almost any circumstance, maybe only with a gale force wind at your back.
There's a pretty good calculator here (make sure you change the ball weight and circumfrence for softball): Trajectory Calculator
A 70mph launch speed and 1687 rpm pure backspin with the optimal launch angle for that combination of 30.8 degrees will get you exactly 210 feet in distance.