Pelicans tuck their wings and free-fall straight down whei} diving for fish. suppose a pelican starts its dive from q height of 16.0m and cannot change its path once committed. if it takes a fish 0.20 s to perform evasive action, at what minimum height must it spot the pelican to escape? assume the fish is at the surface of the water.

3.3 m

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

The fish needs to see the pelican before 0.2 seconds in order to escape so the time pelican has is 1.81-0.2=1.61 seconds

In that time the pelican would have traveled

So, the pelican would be 16-12.71 = 3.3 m above the water.

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