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A body travel the first 1/2 of the total distance with velocity v1 & second 1/2 with v2. Calculate the A.V.?
Average velocity = total displacement/total timefor first half,t1 = x/v1for second half,t2 = x/v2total time = t1 + t2avg. velocity = 2x/(t1+t2) = > 2x/(x/v1 + x/v2) = > 2/(1/v1 + 1/v2) m/s
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