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Gravity and projectile motion

  1. Sep 25, 2009 #1
    1. The problem statement, all variables and given/known data
    A marble is thrown horizontally with a speed of 10 m/s from the top of a building. When it strikes the ground, the marble has a velocity that makes an angle 68° with the horizontal. From what height above the ground was the marble thrown?



    2. Relevant equations
    delta y = (V02 sin2 theta)/(2g)


    3. The attempt at a solution
    4.39 m and 421.24. Neither correct.
     
  2. jcsd
  3. Sep 25, 2009 #2

    tiny-tim

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    Hi IAmSparticus! :wink:

    Show us your full calculations, and then we can see what went wrong, and we'll know how to help! :smile:
     
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