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CBSE Class 9 Answered

prove- work done=1/2mv^2-1/2mu^2
Asked by | 11 Feb, 2012, 05:16: PM
Expert Answer
Work done = force x displacement
 
for a uniformly accelerated motion v2-u2= 2as     and F= mxa
 
 
so W= (ma)x( v2-u2)/2a= 1/2m( v2-u2)
Answered by | 11 Feb, 2012, 06:21: PM
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