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CBSE Class 11-science Answered

What's the following statement means "In computing any physical quantity , the units for derived quantities involved in the relationship are treated as though they where algebraic quantities till the desired units are obtained"
Asked by | 19 May, 2012, 04:48: PM
answered-by-expert Expert Answer
for finding the unit of any physical quantity, say acceleration which is a derived quantity,
we have to start with its formula:
acceleration=change in velocity/time
so  unit of acceleration=unit of velocity/unit of time
                                 =(m/s)/s=m/(sxs)=m/s2
 
this is how the derived units are obtained.
 
eg2: force=mass x acceleration
      unit of force=unit of mass x unit of acceleration
                       =kg x m/s2   =kg m/s2
Answered by | 21 May, 2012, 12:52: PM
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