body distance first half of with speed 50kmph then. covers speed should it next half distance so that it's Avg speed will be 8kmph-with wath Avg. speed = 2V 1 V 2 V 1 +V 2; 80= 2*50* V 2 50+v 2 +50 kmph+ Avg speed d = 80 km
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Answer:
Letx consider, x= total distance covered by the car,
Time taken to complete the half distance with velocity v=40km/h,
t
1
=
2×40
x
=
80
x
hr. . . . .(1)
The time taken to complete another half distance with velocity u=60km/h
t
2
=
2×60
x
=
120
x
hr
The total time taken, t=t
1
+t
2
t=
80
x
+
120
x
=
48
x
hr
The average speed of the car,
v
avg
=
x/48
x
=48km/h
HOPE IT IS HELPFUL
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