The position of a car traveling between two stop signs along a straight city block is given by r=[9t-(43/2)sin(2t/5)]m, where t denotes time and 0s<t<17.2s (signs should be less than or equal to). Compute the displacement of the car between 2.0s and 3.8s as well as between 11.1s and 12.6s. For each of these time intervals compute the average velocity.

change in r1=?

change in r2=?

Vavg of 1=?

Vavg of 2=?


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