A car moves through 20 km at a speed of 40 km/
and the next 20 km at a speed of 60 km/h. La
its average speed.
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Answer:
8 km/h
Explanation:
av. speed =total distance/total time
=s1 +s2 /t1 + t2
t1= s1/v1 = 40/20 = 2hr
similarily t2 = 3 hr
=20+20/2+3
=40/2+3=40/5 =8 km / hr
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