Build a simple car powered by a balloon and investigate how Newton's laws of motion apply to its movement. Test different variables to see their effect on the car's performance.
If the size of the balloon is increased, then the car will travel a longer distance due to greater propulsion force.
As an Amazon Associate, this site earns from qualifying purchases.
Step 1: Cut the cardboard into a rectangular shape to form the base of the car.
Step 2: Attach the bottle caps to the ends of the skewers to create wheels.
Step 3: Tape the wheels to the cardboard base, ensuring they can rotate freely.
Step 4: Cut a straw into two pieces and tape each piece horizontally on the cardboard to hold the skewers in place.
Step 5: Inflate a balloon and attach its neck to one end of a straw.
Step 6: Tape the straw and balloon assembly securely onto the top of the car.
Step 7: Place the car on a smooth surface and release the balloon to power the car.
Step 8: Measure the distance traveled by the car and record the data.
Step 9: Repeat the experiment with different balloon sizes and record the results.
Step 10: Analyze the data to determine the relationship between balloon size and distance traveled.
The car is expected to travel further with a larger balloon due to increased force exerted by the escaping air. This demonstrates Newton's third law: for every action, there is an equal and opposite reaction.
Balloon size
Distance traveled by the car
Car weight, Surface type, Wheel size
Ensure scissors are used safely and that the balloon is not over-inflated to prevent bursting.
Use diagrams to explain Newton's laws of motion.
Include a video of the car in action.
Show a graph of balloon size vs. distance traveled.
