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Old speed/trajectory problem

  1. Sep 21, 2007 #1

    can anyone figure out how to do this ? because the sole reply that the thread got, doesnt seem to work for me..

    thanks !
  2. jcsd
  3. Sep 21, 2007 #2


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    Staff: Mentor

    What is not working?

    The attachment reads -

    [tex]\vec{r} = A (1 m/s)t\hat{x}\,+\,A[(1 m/s^3)t^3-6(1 m/s^2)t^2]\hat{y}[/tex]
  4. Sep 21, 2007 #3
    yes, but i cant seem to solve the questions it asks :P
  5. Sep 22, 2007 #4
    bump ... help please !
  6. Sep 23, 2007 #5


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    Homework Helper

    Did you take the derivative of [tex]\vec{r}(t)[/tex] to get [tex]\vec{v}(t)[/tex]? What did you get?
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