Science Buddies: "Ask an Expert"

Hello and help. I hope this isn't too odd. I have been given an experiment. It consists of two small model cars, one heavier than the other. I am to start each at the top of a ramp, time each one, and see if there is any difference in the speed of the two cars; or if one car will travel farther once it reaches the flats. What I am trying to figure out is, which of Newton's Laws would apply here, and why? The only thing that is changing is the weight of the car. The ramp angle stays the same.
Please help me get started here! Thank you so very much!

Hi bethiboo,

You might take a look at the Science Buddies projects listed below:

https://www.sciencebuddies.org/science- ... gs#summary

https://www.sciencebuddies.org/science- ... op#summary

The background information and bibliographies should help you with your background research. And you may find that you can use some the experimental techniques in your project.

Try the following links for more information on Newton's laws of motion:

https://www.grc.nasa.gov/www/k-12/airpl ... ton1a.html

https://www.khanacademy.org/science/phy ... wtons-laws

I hope this helps. Please ask again if you have more questions.

A. Norman