The second project we completed in STEM was the Physics of Sports videos. My group (Blake Carlile, Aaron Simon, and Addie Seymour) and I did the physics of lacrosse. We broke down the physics required to successfully pass the ball in a lacrosse game. We spent the first two days of the project working on the script for what we are going to say. We spent one class period filming the shots we needed. The next five days we edited the video. We were making good progress with the filming but we underestimated how time consuming editing is. We used the windows movie maker app to edit and publish our video. It took us five days and one hour after school to completely finish editing. Overall, our group worked well together and I thought the project was successful. Our final product is on YouTube.
Here is our final video:
Reflections
During this project, I learned a lot of valuable skills. With this project, I stepped up and led my group. This is a big accomplishment for me because I am usually a follower, not a leader. Another useful skill I learned was how to edit and film a movie. Coming into this project I had very little knowledge about filming and editing a video. I definitely learned a lot about the entire process. Now I know what to do and won't be completely clueless, next time I need to edit something. I also learned that I can improve on somethings as well. First, I need to work on my patience. I have a very low patience level to begin with, so the stress of editing and filming did not help. We soon found that it was extremely difficult to layer the sound and the video together. Every time we moved or cut out some of the video or talking components, the rest of the project shifted. This caused the wrong talking parts to be in the wrong places. This became very frustrating and my patience was tested multiple times. Towards the end we started to figure out how to deal with the problems, but by then the video was almost finished. Another thing I can improve on is my communication. When it comes to certain things I can be very stubborn. I need to learn to make more compromises with my group members and say yes more often. Overall, I thought that our group worked well together and this project was successful. I am very proud of our work and how our video turned out.
During this project, I learned a lot of valuable skills. With this project, I stepped up and led my group. This is a big accomplishment for me because I am usually a follower, not a leader. Another useful skill I learned was how to edit and film a movie. Coming into this project I had very little knowledge about filming and editing a video. I definitely learned a lot about the entire process. Now I know what to do and won't be completely clueless, next time I need to edit something. I also learned that I can improve on somethings as well. First, I need to work on my patience. I have a very low patience level to begin with, so the stress of editing and filming did not help. We soon found that it was extremely difficult to layer the sound and the video together. Every time we moved or cut out some of the video or talking components, the rest of the project shifted. This caused the wrong talking parts to be in the wrong places. This became very frustrating and my patience was tested multiple times. Towards the end we started to figure out how to deal with the problems, but by then the video was almost finished. Another thing I can improve on is my communication. When it comes to certain things I can be very stubborn. I need to learn to make more compromises with my group members and say yes more often. Overall, I thought that our group worked well together and this project was successful. I am very proud of our work and how our video turned out.
Physics Concepts
During this project, we covered a variety of physics concepts. We learned about force, impact, velocity, and acceleration.
To calculate the force required to throw an object through the air, we used the formula Mass(m) x Velocity(v)=Force(F) x Time(t). We then divided by time on both sides to leave us with the formula Mv/t=F.
Next, we found the velocity of the ball in the air. This calculation took 3 steps. First, we calculated the horizontal velocity by using the formula V(horizontal)=Distance(d) / Time. Then we found the vertical velocity. We used the formula Acceleration(a)=V(vertical)/ t. The next step is to use these velocities in a vector diagram (see picture). To find the Total Velocity you use the Pythagorean Theorem (a squared + b squared = c squared).
To find the force of impact, you also use the formula mv=Ft. We plugged in the mass of the ball, its total velocity, and the amount of time the ball impacts the net. We used these numbers to solve for the force.
We also revisited older topics such as:
Mass- the amount of matter in something.
Force- a push or a pull. You use the equation F=ma (Force = Mass x Acceleration)
Acceleration- rate of change of velocity(speeding up or slowing down)
Gravity- gravity is a force between two objects and it is in proportion to their masses and inverse to the distance between them. Acceleration due to gravity(g or Ag) is 9.8 m/s^2
During this project, we covered a variety of physics concepts. We learned about force, impact, velocity, and acceleration.
To calculate the force required to throw an object through the air, we used the formula Mass(m) x Velocity(v)=Force(F) x Time(t). We then divided by time on both sides to leave us with the formula Mv/t=F.
Next, we found the velocity of the ball in the air. This calculation took 3 steps. First, we calculated the horizontal velocity by using the formula V(horizontal)=Distance(d) / Time. Then we found the vertical velocity. We used the formula Acceleration(a)=V(vertical)/ t. The next step is to use these velocities in a vector diagram (see picture). To find the Total Velocity you use the Pythagorean Theorem (a squared + b squared = c squared).
To find the force of impact, you also use the formula mv=Ft. We plugged in the mass of the ball, its total velocity, and the amount of time the ball impacts the net. We used these numbers to solve for the force.
We also revisited older topics such as:
Mass- the amount of matter in something.
Force- a push or a pull. You use the equation F=ma (Force = Mass x Acceleration)
Acceleration- rate of change of velocity(speeding up or slowing down)
Gravity- gravity is a force between two objects and it is in proportion to their masses and inverse to the distance between them. Acceleration due to gravity(g or Ag) is 9.8 m/s^2
Calculations
Force of Throw
mv=Ft
mv/t=F
(0.14Kg)(13.54 m/s) / 0.07s=F
F=27.1 N
Velocity of Ball
V(horizontal)=d/t Acceleration= V(vertical) / t
V=13.65m / 1.06s 9.8 m/s^2= V / 0.53 s
V=12.9 m/s V=5.2 m/s
(12.9 m/s)^2 + (5.2 m/s)^2=C^2
166.41 m/s + 27.04 m/s=C^2
V(total)=13.54 m/s
Force of Impact
mv=Ft
(0.14Kg)(13.54 m/s)=F (0.05s)
1.9Ns=F(0.05s)
F=38N
Force of Throw
mv=Ft
mv/t=F
(0.14Kg)(13.54 m/s) / 0.07s=F
F=27.1 N
Velocity of Ball
V(horizontal)=d/t Acceleration= V(vertical) / t
V=13.65m / 1.06s 9.8 m/s^2= V / 0.53 s
V=12.9 m/s V=5.2 m/s
(12.9 m/s)^2 + (5.2 m/s)^2=C^2
166.41 m/s + 27.04 m/s=C^2
V(total)=13.54 m/s
Force of Impact
mv=Ft
(0.14Kg)(13.54 m/s)=F (0.05s)
1.9Ns=F(0.05s)
F=38N