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1st Equation of Motion

A diver was d...

Question

A diver was driving $100$ metres below sea level. He went down $20$ metres more and came up $35$ metres. How far below sea level did he dive?

A

+ 85

metres

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B

- 85

metres

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C

+ 55

metres

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D

- 55

metres

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Solution

The correct option is D $- 85$ metres
Clearly, he is at $- 100 - 20 + 35 = - 85$ , i.e $85$ metres below sea level.
Option B is right.

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