- Inflate the balloon to a higher pressure. A higher pressure will create more thrust.
- Use a lighter car. A lighter car will require less thrust to move.
- Reduce friction. Make sure the wheels turn smoothly and there is no drag from the body of the car.
- Streamline the car. A streamlined car will reduce drag and make it more aerodynamic.
- Add fins. Fins can help to stabilize the car and reduce drag.
- Use a lower-friction surface. This could be done by using wax or oil on the wheels and axles.
- Increase the air pressure in the balloon. This will give the balloon more power and make the car go faster.
- Use a bigger straw. This will allow more air to flow into the balloon and give it more power.
- Shorten the straw. This will reduce the distance the air has to travel to reach the balloon, making the car more efficient.
- Make sure the balloon is completely filled with air. A partially filled balloon will not provide as much power as a fully filled balloon.
