Softball Hitting and Velocity

By: Casey Jamison

How Does the Velocity of a Softball Change Based on How you come to the ball for contact?

Fastpitch Softball Hitting Lesson - Shoulder Rotation - SoftballHittingOnline.com

What I am doing now with my swing and what am I changing?

In the video above the girl on the left shows what I was doing with my swing. The girl on the left is keeping her hands in tight to her body and bringing the barrel of the bat short through the zone. That makes it hard to hit the outside pitch. I I need to be doing what the girl on the right is doing. The girl on the right is bringing the knob of the bat to the ball and then making contact.

How am I going to make the change?

I have been working with Coach Flaws and Coach Hilary to come up with a work out to work on bringing the knob of the bat to the ball and keeping my hips in towards the plate until I make contact.


The Workout

  • Load to contact twice, swing x 10 balls
  • Frisbee toss x 10 balls
  • Outside tee x 10 balls
  • Top Hand and Bottom Hand x 10 balls each


The focus of these drills is to drive the knob of my bat towards the ball and keep my hips in tight until I have made contact with the ball.

Hitting workout

How to calculate the results

Working with Mr. Armistead, we cam up with an equation that helped me to figure out the velocity at which the ball is coming off of the bat.


The Equation:

mb(v1b) +mt(vt1)= mb(v2b)+mt(vt2)

m: mass

v: velocity/speed

t: bat

b: ball

1: speed before

2: speed after


What this equation means is, that the mass of bat times the speed of the bat, plus the mass of the ball times the speed of the ball equals the mass of the bat times the speed of the bat after contact plus the mass of the ball times the speed of the ball after contact.


When I was working on the calculations, in the end I was trying to find the speed of the ball after contact. I used a tee for all of the swings I did for finding ball speed so the speed of that ball will be 0 in the equation. To calculate the speed of the bat I used some technology I had at home that is call ZEPP. It shows the speed of the bat and many other things. I then used the graphs given for bat speed and used the speed of my bat at impact and the speed of the bat shortly after impact.


Using the equation above and the information above I received the results pictured below.