1.

A car travels half the distance with constanst velocity 40km/hr. What is the average velocity of the car?​

Answer»

48km/hrExplanation:let x be the DISTANCE TRAVELLED by the car..x/2 be half the distance now time t taken by the car with a VELOCITY 40km/hr is x/80hr (time=distance/speed) time t taken by the car with a velocity 60km/hr is x/120 hr. now avg velocity= x/2+x/2                           x/80+x/120                          = x*9600                                200x                           = 48km/hr



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