The hypothesis is that a firmer spring will increase the speed of a radio controlled car.

You will set up two courses, one straight line and one with corners and turns. You will install the RC car with different springs and measure the time taken to complete the 10 meter course.

You will need an RC car, a high resistance spring, a medium resistance spring, a low resistance spring, a spare battery, 80 empty soda cans or bottles, a piece of chalk, a measuring tape, a string (10 meters long), a stop watch, and an unused car park area.

The results showed that the springs with large and medium resistance increased the speed of the RC car for the straight line course. However, for the course with the corners and turns, the speed of the RC car was observed to be the fastest when it was set up with springs that had the lowest resistance.

This science project is interesting because it shows how changing the spring resistance can affect the speed of a radio controlled car.

Consider repeating this science fair project by using a different model of RC car such as the Kyosho brand cars. You could also repeat the experiment by changing other accessories in the car such as the type of tires used.

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!!