# Bird Flying Speed#

To predict the flying speed of an eagle, we can use the relationship between the flying speed ($$v$$) and the mass ($$m$$) of birds. It has been reported that in steady flight, the flying speed of birds is related to their mass as $$v \propto m^{-1/4}$$.

## Part 1#

If a 5 $$kg$$ eagle flies at a speed of 70 $$km/h$$, how fast do you expect a 2 $$kg$$ eagle to fly?

Please enter in a numeric value in $$km/h$$.