Question 1145904
He answered -1325 feet because according to his understanding the submarine descended so should be negative. However, the correct answer should be 1325 ft (not - 1325 ft). Please help him understand why.
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It's semantics.
It descended 1325.
Descent assumes negative.
It ascended -1325 feet.
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consider a "round trip."
If it starts at the surface, descends 1000 feet, then ascends 1000 feet, it's back at the surface.
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Descent of +1000 ft = -1000 feet
Ascent = +1000 feet
The sum is zero.
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