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Homework Help: Vector Problem

  1. Sep 30, 2009 #1
    1. The problem statement, all variables and given/known data
    A particle moves in the xy plane with constant acceleration. At time zero, the particle is at x = 3.0 m, y = 6.0 m, and has velocity v = 1.0 m/s i-hat + 7.0 m/s j-hat. The acceleration is given by the vector a = 9.0 m/s[tex]^2[/tex] i-hat + -1 m/s[tex]^2[/tex] j-hat.

    What is the velocity vector at t=3.0s

    What is the position vector at t=5.0s

    What is the magnitude and direction of the position vector
    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Sep 30, 2009 #2


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    Science Advisor
    Homework Helper

    Hi neutron star! :wink:

    The standard constant acceleration equations apply to the the components (of position velocity and acceleration) in any particular direction …

    so try them in the 9i - j direction (and of course, there's zero acceleration in the perpendicular direction). :smile:
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