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Homework Help: Need to calculate the magnitude of the initial velocity?

  1. Aug 18, 2011 #1
    Hi, I need to calculate the magnitude of the initial velocity of the following data for projectile motion. Any help would be greatly appreciated as I have no idea where to start! Thanks

    please see the question here:

    and the data here:

    Thanks so much in advance!
  2. jcsd
  3. Aug 18, 2011 #2


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    Homework Helper

    If you know the vertical (y-component) and horizontal(x-component) of the initial velocity, you should be able to calculate the Initial velocity [using Pythagorus and trig].

    From the data supplied, the time intervals are 0.03 seconds - which is really quite small.
    To calculate the average velocity for the first time interval would be a pretty good approximation for the initial velocity.
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