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Ball thrown in the air, calculate time to hit the ground.

  1. Feb 25, 2009 #1
    Hi everyone! First post here, seems like a great community. Anyways, I'm having a bit of trouble.

    (I missed a bit of classes due to illness, and I'm a bit behind.)

    Here's the problem:

    You stand on top of a building 9.50 meters high, and throw a ball almost straight up. The ball is released with an initial velocity of 25m/s [up]. If you release the ball from 2.5m above the top of the building, find the time it takes for the ball to land on the ground.

    Thanks in advance!
  2. jcsd
  3. Feb 25, 2009 #2


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    Welcome to PF.

    What have you tried so far?
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