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Homework Help: Kinematics in X direction

  1. Sep 20, 2007 #1
    You throw a ball with a speed of 31 m/s at an angle of 40.0° above the horizontal directly toward a wall (Fig. 4-35). The wall is 22.0 m from the release point of the ball.


    (a) How long does the ball take to reach the wall?

    I got .96 seconds

    31m/s Cos(40) = 23.7m/s

    22m/23.7m/s = .96seconds right?

    what did I do wrong?

    Attached Files:

  2. jcsd
  3. Sep 20, 2007 #2


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    Homework Helper

    everything is right except your final answer... 22/23.7 isn't 0.96.
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