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Question about units

  1. Sep 11, 2009 #1
    1. The problem statement, all variables and given/known data

    In an equation of the format y=mx + b, where y=(m1-m2)g and x=acceleration (m/s2) ... what are the units for m and b?
    (I know that m is the slope and b is the y-intercept, but what do they mean?)

    Thanks :)
     
  2. jcsd
  3. Sep 11, 2009 #2

    Redbelly98

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    Welcome to PF :smile:

    Each term, "mx" and "b", must have the same units as y.

    So, first question: what are the units of y?

    Next question, what units for m would result in mx having those same units?
     
  4. Sep 12, 2009 #3
    The units of y = kg x m/s^2

    Therefore, the units of b must equal kg x m/s^2 as well.

    In order for mx to have the same units as y, the units of m should be kg right?

    Thanks for your help!
     
  5. Sep 12, 2009 #4
    Also - does kg x m/s^2 equal Newtons?
     
  6. Sep 12, 2009 #5

    Redbelly98

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    Yes, to everything you said/asked in post #'s 3 & 4 :smile:

    That depends on the context, i.e. on the specific details of what x and y are and how they were measured or calculated.
     
  7. Sep 12, 2009 #6
    Ok great, Thanks!!
     
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