Submit drives his car at constant speed of 40km/hr for 1 hour and then at a constant rate of 60km/hr for 1 more hour. Find average speed
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Vav= 2 V1V2÷V1+V2
Vav= 2(40)(60)÷40+60= 28km/hour
Vav= 2(40)(60)÷40+60= 28km/hour
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