Question

A submarine is searching for underwater features. It is accompanied by a small aircraft

and an underwater robotic vehicle.
At one time, the aircraft is 200 m above the surface, the submarine is 55 m below the
surface, and the underwater robotic vehicle is 227 m below the surface.
a.
What is the difference in height between the submarine and the aircraft?

Answer 1

255 m

Explanation:

From the given question, the surface of the water body is the reference point. And this point is assumed to be 0, so that any distance above it is positive, and any distance below is negative. This is synonymous to the number line system.

Thus,

For the aircraft, its height = +200 m

For the submarine, its depth = -55 m

So that the difference between the submarine and aircraft can be determined as;

200 - (-55)

= 200 + 55

= 255 m

The distance between the submarine and aircraft is 255 m.