In which of these situations, do the two quantities combine to make 0? Select all that apply.
(1 point)
Responses
An airplane at 3,000 feet gains 3,000 feet.
An airplane at 3,000 feet gains 3,000 feet.
A submarine at –340 feet under dives 340 feet.
A submarine at –340 feet under dives 340 feet.
A hawk at 120 feet above the ground dives 120 feet.
A hawk at 120 feet above the ground dives 120 feet.
A diver at –40 feet under the sea rises 40 feet.
A diver at –40 feet under the sea rises 40 feet.
An octopus at –38 feet underwater rises 38 feet.
An octopus at –38 feet underwater rises 38 feet.
An airplane at 3,000 feet gains 3,000 feet. (0 + 3,000 = 3,000)
A submarine at –340 feet under dives 340 feet. (-340 + 340 = 0)
A diver at –40 feet under the sea rises 40 feet. (-40 + 40 = 0)
An octopus at –38 feet underwater rises 38 feet. (-38 + 38 = 0)
So, all of the given situations combine to make 0.
For two quantities to combine and make 0, their magnitudes need to be equal but with opposite signs.
From the given situations, the following ones satisfy this condition:
1. A submarine at –340 feet under dives 340 feet.
(–340 feet + 340 feet = 0 feet)
2. A diver at –40 feet underwater rises 40 feet.
(–40 feet + 40 feet = 0 feet)
3. An octopus at –38 feet underwater rises 38 feet.
(–38 feet + 38 feet = 0 feet)
So, the correct answers are:
- A submarine at –340 feet under dives 340 feet.
- A diver at –40 feet under the sea rises 40 feet.
- An octopus at –38 feet underwater rises 38 feet.