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Homework Help: Height, angles, and projectiles

  1. Nov 16, 2008 #1
    1. The problem statement, all variables and given/known data

    A spring-loaded gun can fire a projectile to a height h if it is fired straight up.
    If the same gun is pointed at an angle of 45 degrees from the vertical, what maximum height can now be reached by the projectile.

    1. h _
    2. h / 2\/2
    3. h / 2 _
    4. h / \/2
    5. h / 4

    2. The attempt at a solution

    I believe it would be h / 2, but I'm not sure why other than the fact that 90/2=45 and the heights would therefore be relative.
  2. jcsd
  3. Nov 17, 2008 #2


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    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi FrenchAtticus! Welcome to PF! :smile:

    Hint: use conservation of energy, and Newton's second law horizontally. :wink:
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