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Archimedes and Acceleration

Archimedes and Acceleration. Archimedes Acceleration Pre-test/ Study Guide. Bell Work. How does A rchimedes principle apply to this picture? The metal cylinder originally was balanced with the metal piece on the other end. Now it is not

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Archimedes and Acceleration

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  1. Archimedes and Acceleration Archimedes Acceleration Pre-test/ Study Guide

  2. Bell Work How does Archimedes principle apply to this picture? The metal cylinder originally was balanced with the metal piece on the other end. Now it is not Answer this thought in your notebooks and draw a sketch of the setup.

  3. Bellwork Video and Discussion

  4. Archimedes Four Square Using only your Prentice Hall Book – Draw this in your notebook and answer each Square. You will have 20 minutes to quietly work on this.

  5. Acceleration!

  6. Acceleration Let’s Review: What is Speed? Velocity? What is a Vector? • Acceleration: RATE at which velocity changes • Refers to INCREASING speed, DECREASING speed, or CHANGING direction.

  7. Is Acceleration a Vector? A softball accelerates when it is thrown, hit, or caught. What change in motion occurs in each example? Thrown- ball accelerates as it is thrown Hit- ball changes direction Caught- ball decelerates (negative acceleration) How can a car be accelerating if its speed is constant at 65 km/h?

  8. The arrows are larger as the plane increases speed or accelerates…the arrows represent the vector quantity.

  9. Calculating Acceleration Final Velocity - Initial Velocity Time Final Velocity Beginning Velocity Vf - Vi a = t Time

  10. Example: As a roller coaster starts down a slope, its velocity is 4 m/s. But 3 seconds later, its velocity is 22 m/s in the same direction. What is its acceleration? Initial Velocity: 4 m/s Final Velocity: 22 m/s Time: 3 s Final Velocity – Initial Velocity/ Time 22 m/s – 4 m/s 3 s 18 m/s = 6 m/s/s or 6 m/s2 3 s

  11. Graphing Acceleration • Speed vs. Time Graph • Upward means speed is increasing Line is straight means acceleration is constant • A horizontal line (flat) would mean that the object is moving at a constant speed. • Slope on a speed vs. time graph represents acceleration

  12. Distance vs. Time Graph • Curved line means that the objects is accelerating (nonlinear). • During each second, the object traveled a greater distance than the second before. • Slope is speed and since slope is getting steeper and steeper, you can conclude that speed is also increasing…or that the object is accelerating.

  13. Let’s Practice

  14. THE END!

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