# Answer to Question #16206 in Mechanics | Relativity for Jonathan

Question #16206

If an airplane travels in one direction half of the time at 55km/h ,and the other half at 90km/h.

What is the total distance traveled by the airplane?

It just seems that it does not give you enough information ,but the teacher says there is a way.

What is the total distance traveled by the airplane?

It just seems that it does not give you enough information ,but the teacher says there is a way.

Expert's answer

Let's denote the total flight time by T and the traveled distance by D. Then

D = (T/2)*55[km/h] + (T/2)*90[km/h].

Here we can find D:

D = T(55+90)/2.

As we see, there is no other way to find traveled distance then to know the total elapsed time.

D = (T/2)*55[km/h] + (T/2)*90[km/h].

Here we can find D:

D = T(55+90)/2.

As we see, there is no other way to find traveled distance then to know the total elapsed time.

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