Physics, 25.02.2020 02:54 leilanimontes714
When a rock is held above the ground, we say it has some potential energy. When we let it go, it falls and we say the potential energy is converted to kinetic energy. Finally, the rock hits the ground (and stays there). What has happened to the energy?
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If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?
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When a rock is held above the ground, we say it has some potential energy. When we let it go, it fal...
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