Our project was to make a video explaining the physics of a specific part of a sport, we chose hitting a double in baseball/wiffle ball. There are typically 1-2 doubles hit per baseball game, they are always exciting to watch as you're on the edge of your set waiting to see if the base runner is safe or not. In our video, we show you how to hit a double correctly so your not tagged out and the physics behind hitting a double.
Above is our finished Physics of Wiffle Ball Video.
On the right is our original story board, we didn't follow it completely.
This project felt very different than our previous project (The Rube Goldberg Machine) and took some time to figure out what my group and I were doing. We wrote our script to start and I feel like we followed it pretty well but there were also some adjustments we made to it. One thing my group and I did very good on was leadership and collaboration. We all had an equal say in everything in our group and one person wasn't excluded from our conversations or just made the decision for our group themselves. Our leadership was very well balanced. For example, one person in my group really wanted to switch from baseball to wiffle ball. No one in my group thought it was a good idea until they explained why. They said it would look more natural playing wiffle ball on a football field than baseball on a football field (we were unable to use the baseball or softball field because they were under construction). We all eventually agreed on wiffle ball and were glad we did. One of my goals from the previous project was to become a better leader and I think I achieved that. Another thing that I did better on than the previous project was being a conscientious learner. Our project didn't feel rushed and we were able to get everything done without packing all the work into one day. The majority of our days went towards filming while recording the audio for our video, creating our video, and doing the calculations took only one or two days. We also didn't have all of our group members working on one thing at a time (unless it was filming). For example, two group members were doing calculations while the other two were writing the script and recording audio. I did a much better job of being a conscientious learner than in the last project.
There are not very many things that I felt like my group or I struggled with but one was definitely communication. Although we were all good leaders, we struggled to communicate what we were doing to the rest of the group which took them by surprise. For example, two members in our group were doing calculations and we needed them in the script to start recording audio. The two doing calculations realized they had to convert meters per second to miles per hour. They didn't tell me and another one of my group members that and we didn't tell them we were going to begin recording. We ended up having to re-record three audio pieces because of this. In the future, even if it seems obvious what I am doing or going to do, I am still going to let my group members know so we don't make a mistake. Another thing we struggled with was critically thinking. Throughout the whole project we never really asked questions about why we were doing something, we kind of just went along with it. Or, we were so fast to shoot down an idea that might be really good. For example, when our group split up the calculations and script writing, none of us ever asked why something was there and just went along with it. The calculations people read the script and the script writers put the calculations into the script without double checking their work or asking about the calculations. In the future, if my group ever splits up work, I can ask why they did something and explain to them why I did something even if they didn't ask.
We did calculations so wiffle ball players don't have to ask why they are doing something. Calculations of wiffle ball tell you the velocity and forces of sliding, hitting, and pitching.
In the video, we recommend hitting the ball with 26 N so it can go as far as possible. In the video when the ball is hit with 26 N, it goes 108 feet. We found the force of the bat hitting the ball by finding the momentum which is equal to impulse. To find the momentum we multiplied the mass and velocity of the ball.
The momentum before and after a collision is equal. We found the momentum to our slide by multiplying mass and velocity. Momentum is measured in Ns. The momentum of our slide is 313 Ns.
There are three types of velocity we looked at with wiffle ball, horizontal, vertical, and total. The horizontal velocity is the average speed of an object going side to side assuming no outside forces. We found the horizontal velocity of the pitch the batter threw to the batter by dividing the distance to home plate, 13 m, by the time it took for the ball to get to home, 0.6 s. We got 21.7 m/s. The vertical velocity is the average speed of an object going up and down. In the pitch, we found the vertical velocity by multiplying the acceleration due to gravity (9.8 m/s^2) and the time it took to get there, 0.4 s. We got 3.92 m/s. The total velocity is horizontal velocity plus vertical velocity. For the pitch, we used the equation a^2+b^2=c^2, we added the vertical velocity plus the horizontal velocity which ended up equaling 22.05 m/s