When water is flowing through a pipe,then its velocity changes by5%.Find change in percentage in power of water.

we know
power= work/time
also
work =change in KE
let power in 2nd case be P2           
    
                              P in 1st case=1/2 mv2/time
                                                  P2 =1/2m  (105/100) v*(105/100) v/time
increase in power in 2nd case=1/2m(5/100)v*(5/100)v

change in % of power=(increase/initial power)*100% 
                                  =0.25%
i hv considered the change of 5% as increase
u should specify

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