Roll of TaPe
This modification majorly improved our car because it made the connection between the axel and the wheel a lot more stable. Because we rolled up the duct tape slightly larger than the hole in the wheel, it allowed the wheel to not move on its own.
Car Distance with Mod: 7ft
Modification of the BodY
This modification helped the car move further very much. The modification itself is the cutting off of the back of the car to reduce drag. This meant that the car would not be slown down as much by the back of the car.
Car Distance with Mod: 11ft
Rubber bands on Wheels
Adding rubber bands to the wheels greatly increased the traction on our wheels. Having slippery wheels on a slippery floor can make the car spin out of control, adding the rubber bands keeps the car on a straight path over the slippery floor.
Car Distance with Mod: 13ft
Wooden poll on back
The wooden pole on the back of our car is another solution to solving the problem of drag on the car. Adding this narrow pole on the back decreases the size of the car being dragged on the ground.
Car Distance with Mod: 10ft
Velocity and Acceleration
We used the Video Physics app to analyze acceleration and velocity of our car. To do this we took the video in a specific form. We tracks our car from the app and set the measurements it needed to use. After many tries we were able to get solid results. (Velocity = Distance/Time, Acceleration= Change in Velocity/ Change in Time)
The angle in the video needed to be shot to show the whole length the car travelled with a meter stick to tell the app what measurements to calculate. We added the points on the app to make the graph below.
The graph above shows the dots going up and down, when they are up the cars speed is faster than the dots that are lower which shows the car going slower.
To calculate the acceleration which was 2.25 meters a second, I first found the change in velocity between two points and then calculated the change in time between two points. Finally I divided them together and got my answer.
Thanks for reading!