Answer:
The bird's average velocity is 4.00 m/s.
Step-by-step explanation:
Given that,
Distance = 5190 km
Time
We need to calculate the bird's average velocity for the return flight
Using formula of average velocity
![v_(avg)=(d_(i)-d_(f))/(t)](https://img.qammunity.org/2020/formulas/physics/college/bndx9midtbaje8eg5duqa1ai51q77csldd.png)
Where, d = position
t = total time
Put the value into the formula
![v_(avg)=(0-5190*10^(3))/(1.296*10^(6))](https://img.qammunity.org/2020/formulas/physics/college/r1l6gyccdyigrgw6qqjd3048xbulccaswe.png)
![v_(avg)=-4.00\ m/s](https://img.qammunity.org/2020/formulas/physics/college/1lp7k8zrh6skidgx5pue88zn94sinclmty.png)
Negative sign shows the bird is traveling in negative x -axis.
Hence, The bird's average velocity is 4.00 m/s.