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Given "A large boulder is ejected vertically upward from a volcano with an initial speed of 40.1 m/s . Air resistance may be ignored." I'm asked "What is the magnitude of acceleration while the boulder is moving?"

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Principles of Physics: A Calculus-Based Text
Principles of Physics: A Calculus-Based Text
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ISBN: 9781133104261
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Publisher: Cengage Learning
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