What goes faster?
a derby car with more weight or less weight
Harbins Elementary #31
Hypothesis
I think the heavier derby car is going to be faster.
Research
Don Murphy made the pinewood derby. The pinewood derby started in Manhattan beach. Only cub scouts do the pinewood derby not boy scouts. The pinewood derby is about making little cars and racing them.
Materials
Race car
Race track
Timer
Computer
Weights
Calculator
Scale
Procedure
1. Build a derby car
2. Set up the track
3. Run the car down the track and see how long it takes the car to cross the finish line three times
4. Add the times and divide it by three
5. Add weight to the car
6. Run the car down the track and see how long it takes the car to cross the finish line three times
7 Add the times and divide it by three
8. Add more weight to the car
9. Run the car down the track and see how long it takes the car to cross the finish line three times
10. Add the times and divide it by three
11. see witch car is faster
Observations/Data
Conclusion
The heavier car was faster. More weight makes a derby car faster.
Harbins Elementary #31