Friday, September 30, 2016

AP Lab Problem


Note: the muddiest point is the word derivative...

  • The term itself is not important to this course but simply stated the derivative is the slope of the tangent
  • So the slope of the tangent of the position vs. time is the velocity 

LAB Tuesday /Wednesday Dress appropriately 
Possibly outdoors!!!
DUE: 10.7.2016
Note card :
with key PSS
Outline of procedure
Notes on error
Graph sketches
(Use feed back and guide to improve responses)


15 points
Read 

  • Come up with ideas to discuss with your lab partners
  • What are some errors that result from your procedure
  • How can error  be minimized.


A world-class runner can complete a 100 m dash in about 10 s. Past studies have shown that runners in such a race accelerate uniformly for a time t and then run at constant speed for the remainder of the race. A world-class runner is visiting your physics class. You are to develop a procedure that will allow you to determine the uniform acceleration a and an approximate value of t for the runner in a 100 m dash. By necessity your experiment will be done on a straight track and include your whole class of eleven students.
  1. (a)  Bycheckingthelinenexttoeachappropriateiteminthelistbelow,selecttheequipment,otherthantherunner and the track, that your class will need to do the experiment.
    ____Stopwatches ____Tape measures ____ Rulers ____ Masking tape
    ____Metersticks ____ Starter's pistol ____ String ____ Chalk
  2. (b)  Outlinetheprocedurethatyouwouldusetodetermineaandt,includingalabeleddiagramoftheexperimental setup. Use symbols to identify carefully what measurements you would make and include in your procedure how you would use each piece of the equipment you checked in part (a).

(c)  Outline the process of data analysis, including how you will identify the portion of the race that has uniform acceleration, and how you would calculate the uniform acceleration. 

  • Keep in mind key problem solving strategies
  • Sketch a graph of the position vs t grap
  • Sketch remainder graphs.(with critical point labeled.

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