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Homework Help: Initial Speed of a Projectile

  1. Mar 19, 2012 #1
    1. The problem statement, all variables and given/known data

    Find the initial speed (Vo) in Projectile motion in terms of
    Gravity (g)
    Height (H)
    Range (R)

    2. Relevant equations

    Nothing has been given, however, have found these so far...

    Initial Velocity = sqrt((1/2 * g * R^2)/(cos2θ * (R * tanθ + H))

    And a few others which are irrelevant.

    3. The attempt at a solution

    My friends and I are all collaborating and the above formula is the closest thing we've come up with.
    We've also resorted to looking up on Google and Yahoo answers without much luck. Similar questions have aroused on Physics Forums, but not quite what we're after.
    Thanks :)
    Last edited: Mar 19, 2012
  2. jcsd
  3. Mar 19, 2012 #2
    After literally, 3 hours of arithmetic. We got the final answer.
    Last edited: Mar 19, 2012
  4. Mar 19, 2012 #3
    Your answer is perfect :-)
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