The hypothesis is that cars move faster on a fine surface and more slowly on a coarse surface.

You will set up a ramp with different surfaces, measure the time it takes for cars to travel two meters down the ramp, and compare the results.

You will need a ramp, three types of model cars, seven pieces of sandpaper with different grit sizes, a stopwatch, a ruler, an assistant, and masking tape.

The results showed that as the surface of the ramp became more coarse, the cars took a longer time to travel two meters down the ramp. This observation stands out and supports the hypothesis that cars move faster on a fine surface and more slowly on a coarse surface.

This science project is interesting because it explores how different surfaces affect the speed of cars. It also shows how friction plays an important role in the motion of cars.

Experiment variations include using remote controlled cars and increasing the gradient of the ramp.

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!