The helicopter flew a third of the way at a speed of 160 km / h, and two-thirds at a speed of 320 km / h.

The helicopter flew a third of the way at a speed of 160 km / h, and two-thirds at a speed of 320 km / h. What is the average speed along the way?

These tasks: the first part of the helicopter path (S1 = 1/3 S; V1 = 160 km / h); the second part of the journey (S2 = 2/3 S; V2 = 320 km / h).

To calculate the average speed of the helicopter along the entire route, we use the formula: V = S / (t1 + t2) = S / (S1 / V1 + S2 / V2) = S / (S / 3V1 + 2S / 3V2) = 1 / (1 / 3V1 + 2 / 3V2).

Let’s calculate: V = 1 / (1 / (3 * 160) + 2 / (3 * 320)) = 240 km / h.

Answer: All the way, the helicopter flew at an average speed of 240 km / h.