A car travels along a straight line for first half time with speed 40 km//h and the second half time with speed 60 km//h. Find the average speed of the car.
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Explanation:
s=d/t
40=d1/t
60=d2/t
d1=40t
d2=60t
time is same in the question for both the cases
avg speed= total distance/ total time
=d1+d2/t+t
=40t +60t/2t
=t(40+60)/2t
= 100/2(both time is cancelled)
=50km/h
mark it as BRAINLIEST
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