A jetliner is traveling east from Seattle to Chicago, a distance of 1,750 miles. The jetliner travels at an average air speed of 620 mph relative to the air. At the jetliner's altitude, the wind is blowing 46 mph to the east. How long does the journey take?
As I said a few minutes ago, you try first.
2.64 hours
To find out how long the journey takes, we need to calculate the ground speed of the jetliner, which is the speed relative to the ground taking into account the effect of the wind.
The ground speed can be calculated by subtracting the wind speed from the jetliner's airspeed. In this case, the jetliner's airspeed is 620 mph, and the wind is blowing at a speed of 46 mph to the east. Since the wind is blowing in the opposite direction of the jetliner's travel, we subtract the wind speed from the airspeed:
620 mph - 46 mph = 574 mph
Now, we can use the ground speed to calculate the time it takes to travel the distance of 1,750 miles. We can use the formula:
Time = Distance / Speed
In this case, the distance is 1,750 miles, and the speed is the ground speed of 574 mph:
Time = 1,750 miles / 574 mph
Calculating this, we get:
Time = 3.05 hours
Therefore, it takes approximately 3.05 hours, or 3 hours and 3 minutes, for the jetliner to travel from Seattle to Chicago.