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Need help badly, calculating the rate of falling objects

  1. Aug 26, 2011 #1
    1. The problem statement, all variables and given/known data

    A small mailbag is released from a helicopter that is descending steadily at 2.68 m/s.
    (a) After 4.00 s, what is the speed of the mailbag?
    v = ?


    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Aug 26, 2011 #2

    wukunlin

    User Avatar
    Gold Member

    i think you can assume that the mail bag has an initial velocity identical to that of the helicopter.

    Once it has been released in midair, it will start accelerating at 9.81 m/s^2 to earth, the calculation becomes trivial
     
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