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Homework Help: Finding Final Velocity

  1. Sep 15, 2008 #1
    This question was actually a 3 part question. I answered (a) and (b) correctly however I can't figure out how to calculate the 'final velocity of the skydiver'. Here are the givens:

    x axis
    v1 - 90 m/s
    acceleration - zero
    delta t - 10.6 seconds
    delta d - 958.5 m

    Y axis
    v1 = 0
    delta t - 10.6 seconds
    acceleration = -9.8 m/s^2
    delta d = 550 m

    I was already asked to calculate the vertical velocity of the skydiver which was 100 m/s.

    However now they want me to find the final velocity. I was thinking about using the equation:

    V2= V1 + a (delta t)

    When I use this equation though I don't come up with the right answer, which is supposed to be 130 m/s.

  2. jcsd
  3. Sep 15, 2008 #2


    User Avatar
    Homework Helper

    It would help if you posted the whole question as stated to you since it's not clear what the situation is. "v1 - 90"?? I'm assuming you mean "v1 = 90"?? Anyway, i'll offer this advice: if the skydiver is not falling straight down, the final velocity will have two components to it (x and y). You need to find the resultant of those two components to get the final velocity.
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