An airplane takes off at 9:00 A.M. and flies at 300. km/h until 1:00 P.M. At 1:00 P.M. its speed is increased to 400. km/h, and it maintains this speed until it lands at 3:30 P.M. What is the airplane’s average speed for the entire flight?
4 hr * 300km/hr = 1200km
2.5 hr * 400km/hr = 1000km
2200km/6.5hr = 338.46km/hr
Well, it seems like this airplane decided to take things slow in the beginning and then speed things up towards the end, just like someone hitting the snooze button too many times and then rushing to get ready. But let's crunch the numbers anyway!
First, let's find out how long the airplane flew at 300 km/h. From 9:00 A.M. to 1:00 P.M. is 4 hours.
At 300 km/h for 4 hours, the airplane covered a distance of 300 km/h x 4 hours = 1200 km.
Next, let's find out how long the airplane flew at 400 km/h. From 1:00 P.M. to 3:30 P.M. is 2.5 hours.
At 400 km/h for 2.5 hours, the airplane covered a distance of 400 km/h x 2.5 hours = 1000 km.
So, the total distance covered by the airplane during the entire flight was 1200 km + 1000 km = 2200 km.
Now, let's calculate the average speed. The total time for the entire flight was 4 hours + 2.5 hours = 6.5 hours.
Therefore, the average speed of the airplane for the entire flight is 2200 km / 6.5 hours ≈ 338.46 km/h.
So, the airplane's average speed for the entire flight is approximately 338.46 km/h. Keep in mind that this is just an average, and it doesn't necessarily reflect the airplane's fashion sense or its ability to tell a good joke!
To find the average speed of the airplane for the entire flight, we need to calculate the total distance traveled and divide it by the total time taken.
Step 1: Calculate the distance traveled during the first part of the journey:
The airplane flies at 300 km/h for a duration of (1:00 PM - 9:00 AM) = 4 hours.
Distance = Speed × Time = 300 km/h × 4 hours = 1200 km.
Step 2: Calculate the distance traveled during the second part of the journey:
The airplane flies at 400 km/h for a duration of (3:30 PM - 1:00 PM) = 2.5 hours.
Distance = Speed × Time = 400 km/h × 2.5 hours = 1000 km.
Step 3: Calculate the total distance traveled during the entire flight:
Total Distance = Distance from Step 1 + Distance from Step 2 = 1200 km + 1000 km = 2200 km.
Step 4: Calculate the total time taken for the entire flight:
Total Time = Time from Step 1 + Time from Step 2 = 4 hours + 2.5 hours = 6.5 hours.
Step 5: Calculate the average speed:
Average Speed = Total Distance ÷ Total Time = 2200 km ÷ 6.5 hours ≈ 338.46 km/h.
Therefore, the airplane's average speed for the entire flight is approximately 338.46 km/h.
To find the average speed of the airplane for the entire flight, we need to calculate the total distance traveled and divide it by the total time taken.
First, let's calculate the distance traveled during the first phase of the flight from 9:00 AM to 1:00 PM. The airplane flew at a speed of 300 km/h for 4 hours.
Distance = Speed x Time
Distance = 300 km/h x 4 h = 1200 km
Next, let's calculate the distance traveled during the second phase of the flight from 1:00 PM to 3:30 PM. The airplane flew at a speed of 400 km/h for 2.5 hours.
Distance = Speed x Time
Distance = 400 km/h x 2.5 h = 1000 km
Now, let's calculate the total distance traveled by adding the distances from both phases of the flight.
Total distance = 1200 km + 1000 km = 2200 km
To find the total time taken for the entire flight, we can sum up the times for both phases.
Total time = 4 hours + 2.5 hours = 6.5 hours
Finally, we can find the average speed by dividing the total distance by the total time.
Average speed = Total distance / Total time
Average speed = 2200 km / 6.5 hours ≈ 338.46 km/h
Therefore, the airplane's average speed for the entire flight is approximately 338.46 km/h.