PHY7AW10practice-q4

# PHY7AW10practice-q4 - g = 10 m/s 2 PE = mgy KE =(1/2)mv 2 3...

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A Physics 7 student throws a 50 g stone straight down with speed 14.14 m/s from the top of a 60 m building, and graphs the results as shown. 1. Where did the student decide to set y=0? How do you know this? 2. Determine Etotal. 7A 2C Quiz 4 DL Sec. ___ Name _______________________ __________________ last first for office use only I certify by my signature that I will abide by the code of academic conduct of the University of California. Signature _____________________________ Useful equations/constants:

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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 re-printed 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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PHY7AW10practice-q4 - g = 10 m/s 2 PE = mgy KE =(1/2)mv 2 3...

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