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Physics Advance Problem

  1. Aug 30, 2009 #1
    1. The problem statement, all variables and given/known data
    An elevator is moving upward at 0.97 m/s when it experiences an acceleration 0.33 m/s2 downward, over a distance of 0.61 m. What will its final velocity be?


    2. Relevant equations

    Not Sure

    3. The attempt at a solution
    Not Sure
     
  2. jcsd
  3. Aug 30, 2009 #2

    tiny-tim

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    Welcome to PF!

    Hi Leo34005! Welcome to PF! :smile:

    Use the standard constant acceleration equations. :wink:

    Show us what you get. :smile:
     
  4. Aug 30, 2009 #3
    I dont know what to put in
     
  5. Aug 30, 2009 #4

    tiny-tim

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    uh?? :confused:

    you have the initial speed, the acceleration, and the distance, and you want the final speed …

    which equation(s) do you think that would be? :smile:
     
  6. Aug 30, 2009 #5
    1st?
     
  7. Aug 30, 2009 #6

    tiny-tim

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    which one is that? :confused:

    write it out!! :smile:
     
  8. Aug 30, 2009 #7
    v = u + at
     
  9. Aug 30, 2009 #8

    tiny-tim

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    but you don't have the time!!
     
  10. Aug 30, 2009 #9
    v^2 = u^2 + 2as

    Is that the right equation, if so what do i plug in?
     
  11. Aug 30, 2009 #10

    tiny-tim

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    if you're not just guessing, you should know what to plug in …

    what do you think?​
     
  12. Aug 31, 2009 #11
    Forgive me for butting in, but this does not belong in Advanced Physics. This is freshman physics. You might get more help over there.
     
  13. Aug 31, 2009 #12

    berkeman

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    Staff: Mentor

    Thread moved to Intro Physics.

    Show your work.
     
  14. Sep 1, 2009 #13
    ur close
     
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