1.

A person travels along a straight road for the first3 time with a speed v, and for next time witha speed v2. Then the mean speed v is given by6.2t31 1 2v 3v, 3v3v2V123

Answer»

Avg velocity =Vavg = S/tTotal distance = S = S1 + S2or V1 x t/3 + V2 x 2t/3

so,

Vavg =V1 x t/3 + V2 x 2t/3 /t

=V1 + 2V2/3



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