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Components of Projectile Motion

  1. Oct 20, 2009 #1
    1. The problem

    A ball is thrown from a 19m building and hits the ground 98.2 m away. Gravity = 9.8 m/s2. Find the intial velocity as well as x and y components of the ball just before it hits the ground


    2. Relevant equations
    I found time=1.969149822.
     
    Last edited: Oct 20, 2009
  2. jcsd
  3. Oct 21, 2009 #2

    tiny-tim

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    Welcome to PF!

    Hi Londoncalling! Welcome to PF! :wink:

    No, you've assumed the initial velocity is horizontal.

    Call the initial speed v, at an angle θ to the horizontal.

    Then do the equations for the x and y directions (separately), and eliminate t. :smile:
     
  4. Oct 25, 2009 #3
    Thanks I figured it out! Now if only I could figure out how to mark this thread as solved....
     
  5. Oct 26, 2009 #4

    tiny-tim

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    oh, that facility stopped working ages ago! :rolleyes: :smile: :tongue2:
     
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