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Math Help - Particles (i+j)

  1. #1
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    Particles (i+j)

    Hey I have got to do some mechanics questions for monday and i am struggling with a few.

    This is one of them:

    The velocities of two particles A and B are (pi-7j)m/s and (5i+qj)m/s respectively. The velocity of A relative to B is (2i-3j)m/s.

    FInd the values of p and q.

    Any help would be much appreciated.
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  2. #2
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    Quote Originally Posted by andythefox View Post
    Hey I have got to do some mechanics questions for monday and i am struggling with a few.

    This is one of them:

    The velocities of two particles A and B are (pi-7j)m/s and (5i+qj)m/s respectively. The velocity of A relative to B is (2i-3j)m/s.

    FInd the values of p and q.

    Any help would be much appreciated.
    I'm not too sure, I've not done mechanics for a good few months (if you have the answers in the back of your book you could check this answer)

    p + 5 = 2
    Therefore p = -3
    -7 + q = -3
    Therefore q = 4.

    If you have till monday i recommend asking your teacher tomorrow (friday)
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