What forces make your car move? What forces make it stop?
- Take a photo of your car below (or draw it if you prefer / don't have it).
- Add arrows to show the forces acting on it, and label each force.
- Label where potential energy is being stored.
- Optional: Add a written explanation if it will make your thinking clearer.
Check out questions #10&11 from Design Part 4 for help! Or ask!
Look back at #13 & #15 on your Design Part 4. Choose at least one of the ideas you came up with to improve your car, and do it!
Take a picture of your revised car & describe: what did you change and why?
Did it work? Test your car with the change(s) you made!
Did the changes improve the speed or distance traveled from your tests in Part 3? Not at all, a little or a lot? Use specific numbers to describe what happened.
You might say, "In my initial tests, my car traveled ___ on average. However, after...
If yes, why do you think it made a difference? If not, why do you think it didn't help?
Use what you know about Newton's first law and forces to suggest an explanation. Try to use 3-4 sentences and scientific language, such as:
"My changes affected the __ force acting on my car by...
"Newton's law supports this idea because...
