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Homework Help: Vector component problems

  1. Sep 26, 2012 #1
    1. The problem statement, all variables and given/known data
    An object is moving in the x direction at 1.3 m/s when it undergoes an acceleration. Acceleration vector equals .52 j hat meter per second every second. Find its velocity vector after 4.4 seconds.
    I am told to find x and y component of the velocity vector.

    2. Relevant equations

    Velocity vector x component equals initial velocity x component + acceleration vector x component times time.
    Same applies for y component

    3. The attempt at a solution
    Use the above equation to find x component.
    Since the object has a initial velocity in the x direction. Plug that in to the equation. There is no acceleration in the x direction based on the problem. So acceleration vector x component is zero which makes initial velocity vector x same as final velocity x component. The final velocity x component is 1.3 m/s.

    To find velocity y component insert. 52 j hat as it was a given. Insert time as well. Initial velocity y component was not given. So it is zero. The final velocity y component is 2.3 m/s.
  2. jcsd
  3. Sep 26, 2012 #2


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    Gold Member

    Yeah, seems ok to me.
  4. Sep 26, 2012 #3
    Thanks for the confirmation.
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