The descent rate is 7 feet/second. the subs elevation would be 7 x 10(60) which is 7x 600the sub's elevation would therefore be 4,200 feet below sea level
The descent rate of the submarine is 7 feet per second. After 10 minutes, the submarine reaches an elevation of -4200 feet below sea level. This means the submarine has descended a total of 4200 feet in that time period.
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