An airplane flies 2160 km with a constant speed of 960 km/h and another 360 km with a constant speed of 720 km/h. What is its average speed for the total trip?
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time for first fies=2.25
time for second flies=0.5 average speed= 840km/h
time for second flies=0.5 average speed= 840km/h
Answered by
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average speed= 840km/h
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