How do you make a balloon powered race car?


  1. Put your car down on a flat surface and give it a good push.
  2. Tape the neck of the balloon around one end of the other straw.
  3. Cut a small hole in the top of the water bottle, just big enough to push the straw through.
  4. Push the free end of the straw through the hole and out the mouth of the bottle.

How do balloon powered cars work?

When you blow up a balloon, set your racer down and then let it go, the escaping air from the balloon rushes out of the straw. This is your car’s propulsion system. As the air flows from the balloon, the energy changes to kinetic energy (or the energy of motion). The moving balloon-powered car uses kinetic energy.

Why does the car go forward if the balloon is blowing backwards?

Because the air is pushed out rapidly backwards, there is a reaction force that pushes the balloon forward. This principle comes from Newton’s third law of motion, which states “for every action, there is an equal and opposite reaction.”

What happens if you inflate the balloon more?

When you inflate a balloon, you’re actually putting gases, in this case mostly helium, into an elastic container. As you add more gas, the pressure inside the balloon increases, and in response, the balloon expands… As you go higher into the atmosphere, the air becomes thinner, and the atmospheric pressure drops.

How to make a Balloon car out of cardboard?

Here are the simple step-by-step instructions to make a balloon car out of cardboard: Step-1: Cut a 3 by 6-inch (7.62 by 15.24 centimetre) rectangle out of cardboard. Step-2: Cut two 3-inch (7.62 centimetre) pieces from a straw. Step-3: Tape the straws to the cardboard.

How to build a balloon powered rocket car?

Students will learn the concepts of Newton�s Law of Motion, friction, jet propulsion, and air resistance by designing and constructing a balloon powered rocket car. To build a Balloon Rocket Car that can extract the most energy out of the inflated balloon and make the vehicle travel the longest distance.

How is a Baloon powered car powered by air?

In case of our engineering project, ‘Baloon-Powered Car’, the action is “air rushing from the straw and pushing against the air behind the car” while the reaction is “air rushed behind the car through the straw pushing against the car with the same force causing the car in motion towards forward movement”.

What is the reaction of a Balloon car?

This law states that for every action, there is an equal but opposite reaction. In the case of the Balloon-Powered Car, the action is the air rushing from the straw and pushing against the air behind the car. The reaction is the air behind the car pushing against the car with the same force causing the forward movement of the car.