Bird drops 2 kg fish from 5.4 m height

[renob]

Homework Statement

A bird is flying with a speed of 18.0 m/s over water when it accidentally drops a 2.00 kg fish. If the altitude of the bird is 5.40 m and friction is disregarded, what is the speed of the fish when it hits the water?


2. The attempt at a solution

I tried v^2= 2(9.8)(5.4) but didn't get the correct answer.

 

[dsptl]

use delta KE initial = delta KE final

and solve for V

 

[renob]

nice. thanks