Question

Першу половину часу польоту літак рухався зі щвидкістю 600 км/год,а другу половину-зі швидкістю 800 км/год.Знайдіть середню швидкість руху літака

Answer 1

T1=S/2v1;t2=S/2v2;Vc=S/(t1+t2)=S*2v1v2/(v1+v2)S=2v1v2 /(v1+v2)=2*600*800/(600+800)=960000/1400=685,7 км/год

Answer 2

Calculation of Average Speed

To find the average speed of the airplane, we need to calculate the total distance traveled and divide it by the total time taken.

Let's assume that the total time of the flight is 1 hour.

The first half of the flight was covered at a speed of 600 km/h, and the second half was covered at a speed of 800 km/h.

To calculate the total distance traveled, we can use the formula:

Total Distance = Distance in First Half + Distance in Second Half

The distance covered in each half can be calculated using the formula:

Distance = Speed × Time

Let's calculate the distances:

Distance in First Half = 600 km/h × 0.5 h = 300 km

Distance in Second Half = 800 km/h × 0.5 h = 400 km

Now, we can calculate the total distance:

Total Distance = 300 km + 400 km = 700 km

Finally, we can calculate the average speed using the formula:

Average Speed = Total Distance / Total Time

Average Speed = 700 km / 1 h = 700 km/h

Therefore, the average speed of the airplane for the entire flight is 700 km/h.

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