a car moves 30km in 30minutes and the next 30km in 40minutes calculate the average speed for the entire journey
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Explanation:
average speed =total distance covered /total time taken
a S =30km+30km/30m+40m
as=60km/70m
as=6km/7m
as=(6*100 changing into metre) 600m/(7*60 changing into seconds) 420s
as=60m/42s
as=1.428571429m/s
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