What is our end products/findings?
We found out the right way of measuring the angle, and the angle of inclination so as when the ball travels the fastest. We also found out that when we add oil to the tracks, the ball will roll slower then how it rolls without oil.
A description/ explanation of your product/ findings
In the beginning, we actually measured the angle of inclination without knowing that there is a parallax error, therefore we redid it. Then, we found out that oil will slow the speed of the ball as the oil is sticky, therefore, the speed of the ball is slower.