# The speed of a tsunam in Km per hour can be found using r = under root of 4.4944d where d is the depth in meter. suppose the water depth is 8100 metera) How fast is the tsunami moving in Km per hour?b) How long would it take a tsunami to travel 3000 Km if the water depth was a consistent 3000m?

Given Speed of Tsunami r    km / hr                 , Where  d  = Water depth in meter

a ) Speed of Tsunami when d  = 8100 m

r

r$\sqrt{36404.64}$

r$\sqrt{\frac{3640464}{100}}$

r$\sqrt{\frac{910116}{25}}$

r

r  = $\frac{954}{5}$

r = 190.8     km  /hr                            ( Ans )

b ) ​Speed of Tsunami when d = 3000 m

r =

r = $\sqrt{13483.2}$

r = 116 .117        km /hr
Distance covered  = 3000  km

We know

Time  = $\frac{Dis\mathrm{tan}ce}{Speed}$

$\frac{3000}{116.117}$

= ​25.836    hr                                  ( Ans )

• 2
What are you looking for?