Final Post

1. For our project we were definitely doing more lab work. The experiment was only the last couple of days and that was when we were learning the physics while the rest of the time was the actual building of the hoverboard.

2. The main goal of our project was to create a hoverboard that actually worked and get it as close to frictionless as possible. This proved to be tougher than we thought but we did manage to get it to work. Maybe a new goal for the next time somebody does a project like this could be to make it be able to hold more weight or have it be able to move itself with a fan in the back or something. 

3. I really liked being able to build the hoverboard. It was really fun and I liked having something to do that was different than sitting in a class like we do in most of our other classes every day. Also it was fun doing the experiment outside. This project provided a good way for us to get out of the classroom and do something new.

4. If I had to give us a grade for our project I would say A maybe A-. At first I thought this project would be pretty easy but it proved to be a lot harder than I thought. We accomplished our goals of getting the hoverboard to work and come close to being frictionless. On our blog we posted what we could but there wasn't really something that we could post every day other than saying "worked on the hoverboard again" or "made more plans for the hoverboard". Another thing to consider is that we did it without any directions which made it more challenging. Overall it was a fun project and i would say a success as well.

Calculations and Conclusions

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On logger pro we plotted out the video and made graphs of the data. We found the slope of the velocity graph, which would be the acceleration of the board. Next we calculated out the theoretical acceleration of a frictionless board. We subtracted the actual from the theoretical which got us the force of friction. Last we divided this force by the normal force and by the mass of us on the hoverboard. The answer we got was 7.8*10^-4, which is the hoverboard's coefficient of friction. Overall we are happy with this result. The board is not completely frictionless but it does come very close to being frictionless. If we did this experiment again we would make the skirt smaller. We think that the skirt was too big and because of this it creased more than it would have if it was smaller. These creases were bad because they let the air out unevenly which caused parts of the skirt to drag on the ground. Building the hoverboard proved to be harder than we thought. When Speet's brother designed his they did not need it to be frictionless, they just needed it to float. Ours needed to be frictionless, or close to it, otherwise the board would not be able to hover across the pavement and would just drag and not be able to move. We found this out and continued to realize how hard this actually was during the four times that we took the skirt off and readjusted it. Finally after the fourth time we got it to work. In the end we had a lot of fun making this hoverboard and really liked doing the project.