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Unformatted text preview: g = 10 m/s 2 PE = mgy KE = (1/2)mv 2 3. Find the speed v when the stone is halfway down the building. (Graph reprinted here for your convenience!) 4. Explain how to use this graph to determine the strength and direction of the force acting on the stone during its descent, but do not actually calculate the magnitude of the force. 7A 2C Quiz 4 DL Sec. ____ Name ________________________ __________________ last first Useful equations/constants: g = 10 m/s 2 PE = mgy KE = (1/2)mv 2...
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 Winter '10
 Erbacher
 Physics

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