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Bellwork – 09/03/15

Bellwork – 09/03/15. Sketch a graph of position vs. time for when the meter stick was falling in your first lab assignment. Bellwork – 08/26/15. How many times would you repeat a measurement in an experiment?

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Bellwork – 09/03/15

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  1. Bellwork – 09/03/15 Sketch a graph of position vs. time for when the meter stick was falling in your first lab assignment

  2. Bellwork – 08/26/15 How many times would you repeat a measurement in an experiment? As many times as is needed to be confident in your data, and to get consistent values. Your experiment has to be repeatable for someone else.

  3. Bellwork – 09/03/15 • Sketch a diagram with an object in free-fall and show all the forces acting on the object.

  4. AP Physics – Reaction Time Lab Objective : I will test out my reaction time while reviewing some basic physics. Report due ( composition book ) : 9/14/15

  5. Procedure • Find a partner ( form a group of 2 ) – list names in report • Grab 1 meter stick • Partner holds meter stick while you are ready to grab it • Partner drops meter stick vertically / you grab it • Record amount of drop in cm – measure to tenths • Repeat drop 5 times • Switch roles • More detail should be provided than this

  6. Data • Table with height values from 5 reps • This lab is just about your data and nobody else’s

  7. Conclusions • Questions for Reaction Time Lab: • Describe in detail any sources of error ( need more detail than just “human error” ) • Were any of your 5 data values very different than the others? If so, what would/could you do about it? • Convert your drop heights into actual times • Draw two free body diagrams: for the moment your partner was holding the meter stick and during the time the meter stick was in free fall

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