A car travels half the distance with constant velocity

Asked by admin @ 17/08/2021 in Physics viewed by 282 People

A car travels half of the distance with constant velocity 40km/h and another half with a constant velocity of 60km/h along a straight line. Find the average velocity of the car???

Answered by admin @ 17/08/2021

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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