# How do you make a car race with a balloon?

How do you make a car race with a balloon? Procedure Put your car down on a flat surface and give it a good push. Tape the neck of the balloon around one end of

## How do you make a car race with a balloon?

Procedure

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 does a balloon car racer 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. 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.

What is a balloon racer?

In this activity , students will make a car powered by the elastic energy of a balloon. This car converts potential energy into kinetic energy, unlike your family car which converts chemical energy into kinetic energy. Balloons are elastic and store potential energy when they are filled with air.

### How do you make a balloon out of a cardboard car?

Cut the cardboard so it fits over the axles as the body of the car. Attach the cardboard to the straws with tape. Turn the car over and check the wheels move freely. Attach the balloon to one end of the second straw and fix in place with an elastic band.

### How does Newton’s third law apply to a balloon car?

Balloon cars rely on Newton’s Third Law of Motion . As the air rushes backward out of the balloon it pushes the car forward in the opposite direction with an equal force.

What forces does a balloon powered car use?

In the case of the balloon car, the action is the air rushing out of the balloon, pushing against the air behind the car. The opposite or equal reaction is that the air behind the car pushing against the car with the same force, causing the car to propel forwards.

#### What is the science behind balloon cars?

The science behind this experiment is all about energy. When the balloon is inflated it stores the compressed air and stretched rubber as potential energy. When you let the air out of the balloon, the potential energy is converted into kinetic energy; this is the energy of motion, which is why the car moves.

#### What makes a balloon car go faster?

Some of the things that slow balloon cars down, that you have to overcome, are their own weight, air resistance, friction, and inefficient use of the air escaping the balloon. Reducing weight, minimizing drag, cutting friction and improving nozzle air flow will all help make your balloon car go faster.

Why do balloons pop in hot cars?

This is because helium molecules get bigger when they heat up, so if your balloons keep getting hotter, they will eventually pop. If you do need to leave balloons in a car on a hot day, it is best to put them in the trunk away from direct sunlight.