Answer:
The pilot must be began at an altitude of 826.53 m to avoid crash into the sea.
Step-by-step explanation:
Given that,
Velocity = 270 m/s
Acceleration = 9.0g s
We need to calculate the altitude
Using formula of centripetal acceleration


Where, v = velocity
r = altitude
a = acceleration
Put the value into the formula


Hence, The pilot must be began at an altitude of 826.53 m to avoid crash into the sea.