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Time For A Car To Reach A Truck

  1. Apr 26, 2012 #1
    The problems states as follows: A car traveling at 88 km/h is 110 m behind a truck traveling 15 km/h. How long will it take the car to reach the truck? I attached my solution to the
    problem, which is incorrect; though it is wrong, I was just wondering if any one could provide their interpretation of my attempt at this problem--that is, what did I actually solve for?
     

    Attached Files:

  2. jcsd
  3. Apr 26, 2012 #2
    While your method is correct, you have calculated the truck speed incorrectly. Truck speed is 15 kph not 75 kph.
     
  4. Apr 26, 2012 #3
    I am dreadfully sorry, I copied down the problem wrong; the speed of the truck is supposed to be 75 km/h
     
  5. Apr 27, 2012 #4
    What did you arrive at for a time?
     
  6. Apr 27, 2012 #5
    I got 30.6 s--which is actually the answer. Well, this is rather embarrassing; I must have made some algebraic error the first time around calculating it, because I am getting the correct answer now. Sorry everybody, and thank you for your help.
     
  7. Apr 27, 2012 #6
    Good...you are correct.
     
    Last edited: Apr 27, 2012
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