A car 1st 50 km at uniform velocity of 45 km per hour at next vrlocity cover the 50 km 90 km per hour find everag of velocity of car
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simple the car traveled half the distance (50km) at 45 km/h and traveled the other half at 90kmph
average velocity: 45 + 90 / 2
135 / 2
67.5 kmph
average velocity: 45 + 90 / 2
135 / 2
67.5 kmph
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