TYWLS+Derby+500

I chose to use a line graph for this data because we are doing this experiment to test how long it takes for the car to travel down the ramp over time. Yes we are comparing all of the different cars from each group, which would make this a bar graph, but we are testing the different cars for the speed OVER TIME. A pie chart wouldn't make sense because that is for when you are dealing with percents for things like surveys, polls, etc. A line graph would make the most sense to use and was the best chart choice.

DSET: For this experiment, my hypothesis was, "If the arrangement of the shapes affect the speed of the car, then version 4 will be the fastest because since the wedge is infront with a block of weight on it, and it's going down a slope, a combination of normal force and gravitational force will pull it down, making it go faster." When we raced our cars one at a time, we didn't end up using this car because there were some technical difficulties with it, so instead we used the one we thought would be the second fastest, which was version #5, the wedge by itself. On the graph above, each group's car went a different speed. My group was group #1. Out of all 5 groups, ours went the slowest. Since our hypothesis was based on another car, it was hard for us to determine whether it was right or not in the end, but overall I would say we were incorrect. We thought our car would go very fast because it was light with a little weight near the front, but it didn't. We used the wedge by itslef, 4 thin wheels on each side (2 infront, and 2 in back), and we put a nut in the middle of the car. The graph shows how fast everyone's car went, and this graph connects to my hypothesis because we thought a certain car would go fast, and the graph shows us that we were incorrect. To get the average speed, we had to use the formula Speed= Distance/Time or S=D/T. We would race each version of our car 3 times because there are 3 trials. The distance of our ramp was 32 feet, and each time we raced one of the version we would calculate the time it took for the car to get from the top of the ramp to the bottom. We used the lesson sheets Jonathan gave us for our background information. It told us about acceleration and the laws of motion. We also used Brainpop.com and ... to tell us about different ways to rearrange the shaping of the car and also if putting weight on the car would help the car go down the ramp faster. The websites basiclaly said that if we added more weight that the car would go down more quickly because a mixture of weight and gravity would force the car to move downward.