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Homework Help: Shoot arrow in sky - Free fall

  1. Sep 13, 2012 #1
    1. The problem statement, all variables and given/known data
    An arrow is fired upward with an initial speed of 38 m/s. What is it's maximum height? How long does it take to return to the ground? How high is it at 1.3 seconds? How high at 3.8 seconds?

    2. Relevant equations
    x = Vo*t + .5*a*t^2
    y = .5gt^2

    3. The attempt at a solution
    I got 73.75 m for the maximum height, 7.76 s for the time to return, 41.11 m at 1.3 seconds and 73.64 m at 3.8 seconds (which is basically the maximum height). Am I correct?
  2. jcsd
  3. Sep 13, 2012 #2
    Yes, you're correct.
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