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Problems with finding initial velocity of an object

  1. Sep 12, 2012 #1
    1. The problem statement, all variables and given/known data
    In the figure below, what is the minimum initial speed of the dart if it is to hit the monkey before the monkey hits the ground, which is 12.2 m below the initial position of the monkey, if x is 48 m and h = 11 m? (Ignore any effects due to air resistance.)
    Use this figure: http://imgur.com/xDVaz
    From my calculations I have that it takes 1.6s for the monkey to fall 12.2m.


    2. Relevant equations
    x=X0 + V0t + 1/2(a)(t^2)


    3. The attempt at a solution
    Im stuck :/
     
    Last edited: Sep 12, 2012
  2. jcsd
  3. Sep 12, 2012 #2
  4. Sep 12, 2012 #3

    vela

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    Why wouldn't the dart reach the monkey in time?
     
  5. Sep 12, 2012 #4
    The time for the dart travelled horizontally distance of x = time the dart travelled up distance of h = time travelled by the monkey downward to height of h
     
    Last edited: Sep 12, 2012
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