A person travels along a straight road for the first t/3 time with a velocity v1 and for next 2t/3 time with velocity V2 then the mean velocity v is given by ???
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3
S1=3v1/t
S2=3v2/2t
s=S1+S2
s=3v1/t+3v2/2t
s=(6v1+3v2)/2t
AVG.velocity=s/t
=(6v1+3v2)/2
S2=3v2/2t
s=S1+S2
s=3v1/t+3v2/2t
s=(6v1+3v2)/2t
AVG.velocity=s/t
=(6v1+3v2)/2
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11
hope it helps you...........
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