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What the heck is measured in m2 / s2?

  1. Oct 21, 2011 #1
    What the heck is measured in m2 / s2??

    Can somebody tell me what m2 / s2 measures?? A square meter per squared second??
     
  2. jcsd
  3. Oct 21, 2011 #2

    sophiecentaur

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    Re: What the heck is measured in m2 / s2??

    The rate of change in the growth of an area?
     
  4. Oct 21, 2011 #3
    Re: What the heck is measured in m2 / s2??

    energy per unit mass!
     
  5. Oct 21, 2011 #4
    Re: What the heck is measured in m2 / s2??

    what ever.
    I ain't even important.
     
  6. Oct 21, 2011 #5

    russ_watters

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    Re: What the heck is measured in m2 / s2??

    Measured? Nothing. But I suspect the question is really asking about what an energy equation means.
     
  7. Oct 21, 2011 #6

    rcgldr

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    Re: What the heck is measured in m2 / s2??

    My guess is that it's the velocity component for 1 Joule of energy, 1 Joule = 1 kg m2 / s 2, or kinetic energy of an object = 1/2 mass v2 (with v2 stated as m2 / s2 ). ... or it could be related to centripetal acceleration, a = v2 / r.
     
    Last edited: Oct 21, 2011
  8. Oct 21, 2011 #7

    Andrew Mason

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    Re: What the heck is measured in m2 / s2??

    Well, it could be a measure of energy per unit mass (above post #3): J/kg = Nm/kg = kg m sec^-2 m kg^-1 = m^2/sec^2

    AM
     
  9. Oct 21, 2011 #8
    Re: What the heck is measured in m2 / s2??

    mwahahaha:biggrin:
     
  10. Jan 27, 2013 #9
    Re: What the heck is measured in m2 / s2??

    i'm sorry for necrobumping this old tread, but AM is actually right.

    Using bernoulli's equations you can find out the loss of energy due to friction in joule/kg, which is the same as m2/s2.

    A joule is the same as a newton times meter, while a newton is the force required to accelerate a mass of 1 kg by 1 meter per second squared. so if you write it out it becomes:

    [itex]\frac{J}{kg}[/itex] = [itex]\frac{N*m}{kg}[/itex] = [itex]\frac{kg*m*m}{s²*kg}[/itex] =[itex]\frac{m²}{s²}[/itex]

    so m2/s2 could refer to the loss of energy per kg due to friction. It's used mostly in hydrodynamics and aerodynamics. Probably also in thermodynamics.
     
  11. Jan 27, 2013 #10

    rcgldr

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    Re: What the heck is measured in m2 / s2??

    Which would make m^2 / s^2 an optional unit form for potential, such as gravitational potential. For example, for object close enough to earth's surface that gravitational force can be considered constant, then gravitational potential = g h = (9.8 m / s^2) (h m) = 9.8 h m^2 / s^2.
     
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