Speed Investigation - Science

Aim: To see if any cars are speeding outside our school.

Method: 1. Measure distance... power pole --> power pole = 50 m 

2. Time how long it takes a car to travel the distance. 

-"flag" person indicates when a car passes their pole.

-"timer" person starts when a car passes their pole then stops when the flag person tells them to. 

-"writer" person writes down the times.

3. Collect the times 

4. Calculate speed in m/s --> convert to km/h

5. Are there any speeders?

Result:

Speed	Car1	Car2	Car3	Car4	Car5	Car6	Car7	Car8	Car9	Car10	Average
Time (s)	4.69	3.59	4.50	4.40	5.40	4.13	6.07	3.77	3.43	5.02	4.504
ms -1	10.6	13.9	11.1	11.3	9.25	12.0	8.21	13.2	14.5	9.96	11.402
km hr-1	38.1	50.0	39.9	40.1	33.3	43.2	29.5	47.5	52.2	35.8	46.01

Conclusion: 

After doing this experiment and seeing all the results, it is noticeable that all the cars that pass our school do not go at the same speed. Some are going slower than the speed limit and some are going a little faster. The reason being is that some are heavy vehicles/trucks, and some are small cars. All the calculations together, the average speed of the cars is 46.01 km/h. That is below the speed limit which means that the road is much safer.