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March 26, 2017

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A motorist travels at a constant speed of 34.0 m/s through a school zone; exceeding the posted speed limit. A policeman, waits 7.0 s before giving chase at an acceleration of 3.9 m/s2.

(a) Find the time required to catch the car, from the instant the car passes the policeman.

(b) Find the distance required for the policeman to overtake the motorist.
3Your answer is incorrect.

  • Physics - ,

    IT is difficult to know where the policeman started, so I assume at some point the motorist passed.

    They both traveled the same distance.

    d= 34*t
    d=1/2 3.9 (t-7)^2
    set them equal, and solve for time.
    then solve for distance.

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