Question

Літак пролетів першу половину шляху зі швидкістю 7700км.год, а другу зі швидкістю 900км.год . Знайдіть середню швидкість літака на трасі(у км.год)

Answer 1

×-средняя скорость
(7700+900):2=×
8600:2=×
4400=×

Answer 2

Calculating the Average Speed of the Plane

To find the average speed of the plane for the entire journey, we can use the formula for average speed, which is the total distance traveled divided by the total time taken.

Let's assume the total distance traveled by the plane is D kilometers, and the total time taken is T hours.

The average speed (V) can be calculated using the formula: V = D / T

Calculating the Total Distance Traveled

To calculate the total distance traveled by the plane, we can use the formula: Distance = Speed × Time

Let's denote the distance traveled in the first half of the journey as D1 and the distance traveled in the second half as D2.

Given: - Speed in the first half = 7700 km/h - Speed in the second half = 900 km/h

Let's assume the time taken for the first half of the journey is T1 hours and the time taken for the second half is T2 hours.

Using the formula, we can calculate D1 and D2.

Calculating the Total Time Taken

The total time taken for the entire journey can be calculated by adding the time taken for the first half and the time taken for the second half.

Let's denote the total time taken as T.

Using the given speeds and distances, we can calculate T1 and T2.

Final Calculation

Once we have the total distance traveled and the total time taken, we can use the formula for average speed to find the average speed of the plane for the entire journey.

I will now calculate the values and provide the final answer.