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posted by christeen on Saturday, September 15, 2012 at 7:32am.
a car travelled 1/3 of the way between two citties with speed of 80 km/hr, then continues moving with 130 km/hr. find his average velocity for the whole trip
Vavg = (V1+V2)/2 = (80+130)/2=105 km/h.
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