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Finding Rectangular Coordinates

  1. Jan 22, 2009 #1
    1. The problem statement, all variables and given/known data

    A particle moves with position as a function of time in seconds given by the vector ~r = (5t^3, 3t − 6t^4)m.

    What are the rectangular coordinates of the particle’s position at t = 2.5 s?
    What are the rectangular coordinates of the particle’s velocity at t = 2.5 s?
    What are the rectangular coordinates of the particle’s acceleration at t = 2.5 s?

    2. Relevant equations



    3. The attempt at a solution

    I'm a little bit lost? I know that the Vector Components is rx=(5t^3) and ry=6t^4 is that right, so I know I plug in numbers to find the vectors but I don't know which ones?
     
  2. jcsd
  3. Jan 22, 2009 #2
    What's the relationship between distance, velocity and acceleration functions?
     
  4. Jan 22, 2009 #3
    I'm not sure what that means but it says something like this:

    Derive expressions for the velocity and the acceleration of the particle as function of time in
    Cartesian coordinates.
     
  5. Jan 22, 2009 #4
    Yes I am asking if you have a function that tells you distance, how do you get velocity function?, how do you get acceleration function?
     
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