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No Notes 4.15.11 Bouncing ball lab (Mass on Monday) Lab: Graphing and Calculating “COR”

Return VF $$$$$. No Notes 4.15.11 Bouncing ball lab (Mass on Monday) Lab: Graphing and Calculating “COR”. Retake TEST by Thursday 4.21.11 Hw LATE -50% Twin Towers worksheet Late -20%. http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=345. Page 5 space # 3. CONDITIONS FOR USE:

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No Notes 4.15.11 Bouncing ball lab (Mass on Monday) Lab: Graphing and Calculating “COR”

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  1. Return VF $$$$$ No Notes 4.15.11 Bouncing ball lab (Mass on Monday) Lab: Graphing and Calculating “COR” Retake TEST by Thursday 4.21.11 Hw LATE -50% Twin Towers worksheet Late -20% http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=345

  2. Page 5 space # 3 CONDITIONS FOR USE: Use to find the COR, Or to predict how high a resilient object will rebound • Coefficient of Restitution (ELASTICITY)eno label • Coefficient of RestitutionCORno label • Height bounce hBmeters • Height of the drophDmeters

  3. Suggestion To Find a pattern…. Optional to add averages to find pattern

  4. For graphs Plot all 3 points for each height to get an error interval

  5. Graphthe bounce height and the drop height. Draw astraight Line of best fit * * * * * * Include (0,0) in your line of best fit!!

  6. What is the Coefficient of Restitution? 1. What is that slope of each of the graph? PSYW * * * * * * hB hD

  7. What is the Coefficient of Restitution? • 2. What is the elastic Coefficient this ball? PSYW • The COR is less or equal to 1 and greater or equal to 0

  8. Use Graph or equation TO Predict values: • 3. What would you predict, based on the graphs, will the bounce height in centimeters be for a drop height of 200 cm for each of the ball’s? (show your extension of the line and the graph and answer the question) • 4. What do you predict will the bounce height in centimeters be for a drop height of 4 meters for each of the ball’s?Use the equation for COR and the “e” for the ball (from #2) to find the bounce height.

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