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Help me .

  1. Sep 30, 2007 #1
    plzzzzzzzzz help me .........

    in what circumstances is the x-component of a vector given by magnitude of a vector times the sine of its direction angle?
     
  2. jcsd
  3. Sep 30, 2007 #2

    Doc Al

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    Staff: Mentor

    When the angle given is with respect to the vertical (y-axis).
     
  4. Sep 30, 2007 #3
    oh thank u so much...............
     
  5. Sep 30, 2007 #4
    can ny 1 help me with these questions???
    If the component of vector A along the direction of vector B is zero, what can u about the two vectors?
     
  6. Sep 30, 2007 #5
    Q:2
    If the average velocity of an abject is zero in some time interval, what can u say about the displacement of the object for that interval?
     
  7. Sep 30, 2007 #6

    Doc Al

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    Staff: Mentor

    Well, what do you think?
     
  8. Sep 30, 2007 #7
    i hv no idea
     
  9. Sep 30, 2007 #8
    what do you mean by component of vector A along the direction of vector B?
     
  10. Sep 30, 2007 #9

    malawi_glenn

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    of course you must have some clue or idea.

    can you draw two vectors that have no common component? What can you say about them? hint: look at angles.

    Q2: What is the definition of velocity (speed and velocity is not the same), and average velocity?
     
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