![]() For the ultimate test, you can follow a strict set of design rules used in the 2015 Engineering Challenge (see the Procedure for details). ![]() ![]() You want to design your car so it can travel as far as possible. However, when you attach the balloon to a car, like the ones shown in Figure 1, you can harness the balloon's energy to propel the car forward! The engineering goal in this project will be to design, build, and test a car that is powered by nothing but a balloon. When you just let a balloon go on its own, it tends to randomly fly around the room, and is almost impossible to steer. According to Newton's third law of motion, when air is pushed backwards out of the balloon (out the end with the opening), there must be an equal and opposite reaction force that pushes the balloon forward (the end opposite the opening).
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