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Pls help me with a simple question

  1. Apr 24, 2006 #1
    ..hi.. im just a newbie here and i am just confuse in this question.....
    can you please help me....

    A Prius and a RAV4 are initially at rest and 1.9 km apart start moving toward each other at the same time. The Prius accelerates at 5.0 m/s² and the RAV4 accelerates at 4.5 m/s² . assume that their acceleration is constant throughout the time duration.

    a. At what point from the RAV4's starting point in m will the 2 cars pass each other?
    b. how many seconds(from the starting point) will it take for them to pass each othr from the stating point?


    why would the ans. in letter a is 900 and in b is 20 s
     
  2. jcsd
  3. Apr 24, 2006 #2

    Hootenanny

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    Welcome to PF sekishi,

    Please show some working or intial thoughts, you are required to do so before we can help you.

    ~H
     
  4. Apr 24, 2006 #3
    well... i dont know.. mmmhh,, i just add up 4.5 and 5 and get 9.5.... i then divide it in 1900..... and i got 200.... not 900
     
  5. Apr 24, 2006 #4

    Hootenanny

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    Okay, what kinematics equations do you know?

    ~H
     
  6. Apr 24, 2006 #5

    Hootenanny

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    The important point to note here is that the numbers given are acclerations not velcoities.

    ~H
     
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