## Summary

For our second project, we did the "Physics of Sports Video." My group consisted of Max, Nick, Logan, and myself. In this project we took video of a sports action and explained a couple physics concepts behind the shot. The concepts our project, a free throw shot, included were velocity, acceleration, projectile motion, impact forces, and momentum. This project took about ten hours. We started off by brainstorming video ideas. When we had made our storyboard and script, we began filming. After we got all our film clips in, we began editing. You were aloud to use any editing system you wanted. I used iMovie. We then commentated on some slide clips, and that was the end. We then uploaded our video to Youtube to turn it in.

## Reflection

This project was very interesting and fun. I enjoyed the actual filming and all the funny bloopers we had. I also enjoyed experimenting with iMovie. Our group did well when it came to filming the right shots and piecing our video together. We could have improved out time management and organization. We kind of had to think as we went because our script was poorly made. This took us extra time.

While doing this project I learned a good amount of things. I noticed that science can be fun if you make it. Thats why our video seems so goofy. I also learned how to direct a film and keep track of everything involved with the process. To gain these new skills I went through some struggles. One struggle was the fact that I had surgery in the middle of this project. A second struggle was the fact that Nick was sick for half the time. The biggest struggle was staying organized because we had to include a certain amount of things. We constantly had to make sure we were getting the required aspects.

We could still work on getting our audio recording to sound clearer. Also, Logan says 20N instead of 22N, this was a slip of the tongue and we weren't able to re-film the scene. Next time we do a similar project, we will make sure to plan better. On this project we wrote a poor storyboard before doing our filming. We could have stayed more organized if our storyboard was well made. Next time we will also have to try and goof off less. Overall, my group was able to finish our video in time and it looks close to perfect. WE had a good time with this project.

While doing this project I learned a good amount of things. I noticed that science can be fun if you make it. Thats why our video seems so goofy. I also learned how to direct a film and keep track of everything involved with the process. To gain these new skills I went through some struggles. One struggle was the fact that I had surgery in the middle of this project. A second struggle was the fact that Nick was sick for half the time. The biggest struggle was staying organized because we had to include a certain amount of things. We constantly had to make sure we were getting the required aspects.

We could still work on getting our audio recording to sound clearer. Also, Logan says 20N instead of 22N, this was a slip of the tongue and we weren't able to re-film the scene. Next time we do a similar project, we will make sure to plan better. On this project we wrote a poor storyboard before doing our filming. We could have stayed more organized if our storyboard was well made. Next time we will also have to try and goof off less. Overall, my group was able to finish our video in time and it looks close to perfect. WE had a good time with this project.

## Concepts

Velocity: Speed in a given direction. Speed is calculated by dividing distance by time.

Projectile Motion:(We assumed everything was fired off at a 45 degree angle) The velocity, angle, and path of an object in air. For whatever you are trying to find, be it the distance or velocity, there are three components to the projectile. They are horizontal, vertical, and total. You must use the horizontal and vertical components to find the total. The vertical represents what the object would do if there were no horizontal. The horizontal represents what the object would do if there were no vertical. The total represents what the projectile is actually doing. To find the total, you use the Pythagorean Theorem

**V=d/t**(Don't get confused, velocity and speed are exactly the same, but you say the direction the object is going in for velocity.)__Unit__=meters/second (m/s)**How we used it: We calculated the total velocity.****Acceleration:**Rate of change in an objects velocity, or the rate at which you speed up or slow down.**A**cceleration=**V**elocity/**T**ime.__Unit__= meters/second squared**(m/s^2)****How we used it: We used acceleration to find the force of the ball on the player. We multiplied the mass times acceleration due to gravity. We also used acceleration to find the vertical velocity of the ball.**Projectile Motion:(We assumed everything was fired off at a 45 degree angle) The velocity, angle, and path of an object in air. For whatever you are trying to find, be it the distance or velocity, there are three components to the projectile. They are horizontal, vertical, and total. You must use the horizontal and vertical components to find the total. The vertical represents what the object would do if there were no horizontal. The horizontal represents what the object would do if there were no vertical. The total represents what the projectile is actually doing. To find the total, you use the Pythagorean Theorem

**(a^2+**b^2=c^2),**a**and**b**will represent the vertical/horizontal,**c**represents the total. If you are in an area where gravity exists, the vertical velocity will always be changing due to the acceleration of gravity. We say that the**V**elocity =**A**cceleration**X T**ime for these verticals. The horizontal velocity is just**d/t**.**How we used it: We used this to find the total velocity.****Impact Forces:**Force is a push or pull. It is calculated using**M**ass**X A**cceleration. Impact forces are how much force on object exerts on another when it hits it.**I**mpulse=**F**orce**X****T**ime OR**I**mpulse= change in**M**omentum. Since you will have a set impulse when an object hits something, the force and time may go up and down, but they must always multiply to get the same impulse. This is why a hard ball hurts, it is hitting you for less time because it isn't bending in that much, so the force increases.**When a pillow hits you, it takes more time to come to a stop because it compresses, so the time is increased and the force decreases. This reasoning is used to create car airbags.**__Unit__= Newtons (N)**How we used it: We used impact forces when finding the total force. We set the two equations for impulse equal to each other which are Impulse=Change in Momentum and Impulse=Force X Time. So, Force X Time = Momentum.****Momentum:**Momentum is described as inertia in motion.**That means, momentum is velocity with a mass.****M**omentum=**M**ass**X V**elocity. Assuming no friction, all momentum is conserved in collisions.__Unit__= kilograms x meters/second (kgm/s)**How we used it: We found momentum by multiplying the mass of the ball by the total velocity.**