![]() ![]() Energy never “disappears”-it just changes to another form.Īnother way to think about the balloon's movement is to use Newton's third law of motion: For every action there is an equal and opposite reaction. According to the law of conservation of energy, the total amount of energy is conserved. ![]() Some of the energy is also converted to heat due to friction. When you release the balloon, this energy is converted to kinetic energy-the energy of motion-as the balloon zooms around the room. It might not seem like it at first, but a simple balloon car is loaded with physics and engineering concepts! When you inflate a balloon, it stores potential energy in the form of stretched rubber and the compressed air inside. You can even find a friend, build two cars and race them against each other. Turn a pile of trash into a toy car-and watch it go! In this activity you will learn some physics concepts and use recycled materials to build a toy car that is propelled by a balloon. ![]()
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