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Homework Help: Velocity problems regarding vectors

  1. May 14, 2012 #1
    1. The problem statement, all variables and given/known data
    Spaceship initially at rest as measured,experiences constant acceleration of a=(1,2,3)m/s^2?

    what is the velocity,after 5 seconds,
    and speed after 5 seconds
    and position after 5 secs
    what is the distance it has travelled in 5secs

    2. Relevant equations
    v=at not sure what else..

    3. The attempt at a solution
    i think i got velocity my answer was (5,10,15)m/s not sure how i should go about the rest
  2. jcsd
  3. May 15, 2012 #2

    Filip Larsen

    User Avatar
    Gold Member

    Your velocity is correct.

    How do you find speed (a scalar) when you know velocity (a vector)? hint: speed is the magnitude of the velocity vector.

    Regarding position, can you establish an equation that describes the linear position of a single coordinate when the initial speed is zero and the acceleration is constant?
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