posted by taylor on .
......I have a science project and i have to build a toy that contains a level and can convert potential into kinetic energy. I need help i need an example something!!!!!
Something that uses a rubber band such that the rubber band can be wound up; when turned loose the rubber band uncoils and the potential energy is turned into kinetic energy.
i like the answer but can anyone help me invent a toy with like wood or something and what is a simple machine??
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