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Air time of an arrow

  1. Nov 19, 2007 #1
    If an arrow is shot at an angle 45 to the horizontal, and lands in the ground a distance(same height as it was shot) 100m away, is it possible to work out the time taken? I can't figure it out...I have been messing around with equations, but because we don't have an initial velocity I can't get it.

    Any ideas???
  2. jcsd
  3. Nov 19, 2007 #2

    Doc Al

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    Staff: Mentor

    Assuming you can ignore the complications of air resistance, you should be able to figure it out. Hint: Write separate equations for vertical and horizontal position as a function of time. Then solve them together, making use of the given information. (You don't need to know the initial velocity--just call it "v".)
  4. Nov 19, 2007 #3
    Cheers for the input:smile:

    I don't know how I didn't realize it was that simple!
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