Answer:
Option A - 19 feet per minute.
Step-by-step explanation:
Given : The small submarine is at -1,320 feet in relation to sea level. The submarine needs to be at 180 feet below sea level in 60 minutes.
To find : What does the average rate of ascent need to be?
Solution :
The small submarine is at -1,320 feet in relation to sea level.
The submarine needs to be at 180 feet below sea.
The distance left below the sea level is
[tex]1320-180=1140ft.[/tex]
The time taken to cover is 60 minutes.
The average rate of ascent need to be is total distance divided by time
[tex]Rate={1140}{60}[/tex]
[tex]Rate=19\text{ feet per minute}[/tex]
Therefore, Option A is correct.
The average rate of ascent need to be 19 feet per minute.
