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A spacecraft that is initially at rest turns its engine at t=0. Ifits mass is m=3000kg and the force from the engine is 45N, what is the acceleration of the spacecraft?
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How are chemical and physical changes different. What are some demonstrations that you might do to help your students differentiate between a chemical and physical change?
Question: Suppose that the coefficient of kinetic friction between Zak's feet and the floor, while wearing socks, is 0.250. Knowing this, Zak decides to get a running start and then slide across the floor. If Zak's speed ...
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