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A 135-kg cannon at rest contains a 9.5-kg cannon ball. When fired, the cannon ball leaves the cannon with a speed of 115 m/s. What is the recoil speed of the cannon?
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Need help answering this question The ancient Egyptians used simple machines to build the pyramids. Discuss how you might use one or more of the simple machines to move the massive stone blocks up the growing pyramid, an ...
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