Design #1- Balloon Car

This design involves using a balloon, soda bottle, wheels and axles. To make the wheels and axles, thread rolls would be attached to round pencils. To make sure the wheels don't come off, tape would be applied on each side of the wheel for support. Before attaching the wheels, the pencils will be pushed through an empty soda bottle and glued on each side. Then, the wheels will be attached. A balloon will then be added to the top of the car. A straw will be added to the mouth of the balloon, so that the air is released in a way that allows the car to move in a straight path.When the balloon is blown and then released, the air pushing out from the back of the car will exert an equal and opposite force (Newton's Third Law of Motion) which will excel the car forward.