372
Question
A diver dived into the sea straight down for 5m. Then, he swam 2m towards the surface. He is at ___.
- -3
- -3
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Solution
The correct option is A -3
When the diver dived straight down for 5 metres, he is at a depth of -5 m because the sea level is taken as 0. Now, since he swam 2 m towards the surface i.e., towards the positive side, he swam +2 m.
So, he is at a depth of (−5)+2=−3 m.
When the diver dived straight down for 5 metres, he is at a depth of -5 m because the sea level is taken as 0. Now, since he swam 2 m towards the surface i.e., towards the positive side, he swam +2 m.
So, he is at a depth of (−5)+2=−3 m.
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