Physics of Sports Video

How To Throw A Boomerang

How We Made The Video

1. We started off by just thinking of what it takes to throw a boomerang with the different steps it takes to throw one. Originally, our group was going to do the physics of throwing a frisbee, but we thought it would be more interesting to show how to throw a boomerang.

2. We then used a google jamboard to make a very rough storyboard of the video. We really only used this for a day or two any never was used to make the final product.

Jamboard Link

3. We then made a script (below) on the layout of the video. This is what we used for what to film for the clips and what to say for the voiceovers.

3. Next we did some calculations (picture of work below). We calculated the velocity of the boomerang initially and the velocity when it was coming back to you.

4. We then started to put the video together. I was in charge of completing a rough draft while my group mates completed voice overs for the video. In the rough draft, I just tried to get all the clips together and have some simple text over them. I had no audio at this point.

Boomerang Video Rough Draft

5. Next was to get the voice overs to fit the clips. I wasn't able to get the audio clips from my google drive to iMovie on my phone, so Zane did that portion where he also touched the video up from the rough draft to make this rendition of the video.

6. The video was then finalized with music just so the background wouldn't be so silent. At this point the video was complete with music (Final Video Above).

Key Terms

• Force of Impact: Force of impact is generated when 2 objects meet and collide together. This is calculated when you multiply the mass of the object times change in velocity and set it equal to force times change in time. You then solve for force. We used this to find the force of impact of catching the boomerang when it came back to you. We found that the boomerang came back with 5.6N of force.

• Horizontal Velocity: This is how fast something is going horizontally. You can find horizontal velocity by dividing the change in horizontal distance by the time. We found that the boomerang had a horizontal velocity of 15 m/s initially.

• Vertical Velocity: This is how fast something is going up or down. This is found when you multiply the acceleration due to gravity (9.8) times the time it takes the object to fall. We used this to find how fast the boomerang was moving downward. It was moving at 7.5 m/s.

• Total Velocity: This is found when you use the horizontal and vertical components and put them together forming a 90 degree angle. You then solve for the hypotenuse using pythagorean theorem to get total velocity. This was used to find the boomerang was moving at 16.7 m/s.

• Bernoulli's Principle: An increase in speed pushing down gives an opposite force that pushes up on the object giving it lift. This is how a boomerang gets lift and why a boomerang is shaped like two plane wings put together.

Reflection

I think that this project went very well. I at times felt like I wasn't doing enough because I was delegated to edit the video and for the first week it was getting footage and I have absolutely no clue how to throw a boomerang and I don't own a boomerang but after the video I have a pretty good idea on how to throw a boomerang. The point is though I felt kind of useless until we needed the editing done. I felt like I was a good team member since I was completing what I needed to do on time. I think that I learned a lot about video editing and how frustrating iMovie can be. It was annoying that iMovie can't be a cloud video editor and we had to have one person at a time edit and now two or three of us. I think that the project went really well over all and I think that the final product turned out really good.