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预订 Faster than A Speeding Bullet! Kinetic Energy of Objects with Speeds and Mass Grade 6-8 Physical Science: 978154199
预订 I’m Energized! What Is Energy? Forms of Energy and How It Is Related to Work Grade 6-8 Physical Science: 978154199
预订 What is Momentum? Defining and Calculating Momentum Using Newton’s Third Law Grade 6-8 Physical Science: 978154199
