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Question regarding DIMENSIONAL ANALYSIS

  1. Jan 11, 2012 #1
    we can use the dimensional analysis to check the homogeneity of a physical quantity.
    based on the question : ''can the equation V=ut + at be correct? '', we know that the LHS isn't the same as the RHS..
    since the equation is not dimensionally homogenous,so it can never be correct..(the answer tat i got)
    does it mean this equation is wrong?
    then why we r still using this equation?
    :confused:
     
  2. jcsd
  3. Jan 11, 2012 #2

    Doc Al

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    Staff: Mentor

    Yes.
    You shouldn't be! Perhaps it just looks similar to one that is valid. Such as: v = u + at. (Note the differences.)
     
  4. Jan 11, 2012 #3
    I agree, it is wrong.
    This is the value of dimensional analysis
     
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