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Physics 211, Quiz 18

Question 1: Joe Nascar drives around a circular track with diameter D = 2.5 miles. He looks as his odometer and sees that he has travelled s = 1.9 miles.

What is Joe's angular displacement from the start? 

  Answer: The angular displacement is

                         arc length        1.9 miles
               theta =  -------------  =  -----------  =  1.52 radians
                          radius           1.25 miles


          or (for partial credit)


               theta =  87 degrees

Creative Commons License Copyright © Michael Richmond. This work is licensed under a Creative Commons License.