character: Isaac Newton
topic: Principles of Motion and Energy
grade: 9
subject: Physics
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character: Galileo Galilei
topic: Historical Contributions to Motion
grade: 9
subject: Physics
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character: Albert Einstein
topic: Theory of Relativity and Energy
grade: 9
subject: Physics
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character: Aristotle
topic: Early Theories of Motion
grade: 9
subject: Physics
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