Answer:
-1050
Step-by-step explanation:
I know the answer because descending means going down so 2100 is the big number and its negative to if you do -2100 divided by 2 then you will get -1050.
The equation representing the equation for descending submarine is [tex]s = -115812\times t + 16.085\times t^2[/tex]
Let us consider that the displacement descended by the submarine = s =2100 feet
Time taken by the submarine to travel this distance = t = 2 hours = 2 [tex]\times 3600 s = 7200 s[/tex]
From equation of motion we can write
[tex]s = u\times t + \dfrac{1}{2} gt^2[/tex]
Where g = Acceleration due to gravity = 32.17 [tex]ft/s^2[/tex]
On putting the values of g, t and s we can get
u = -115812 feet /s
Hence the equation to represent the time and elevation for submarine is given by
[tex]s = -115812\times t + \dfrac{1}{2} \times32.17\times t^2[/tex]
[tex]s = -115812\times t + 16.085\times t^2[/tex]
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https://brainly.com/question/14355103
