Question

A car travels 8 km southwards, followed by

6 km east wards. What is southward

displacement ?

a) 14 km b) 2 km c) 8 km d) 10 km​

Answer 1

Answer:

question is wrong

Explanation:

because south wards traveled car cannot turn may be it can but it takes minmum 8km

Answer 2

Explanation:

South and East imply that you are on a global coordinate system. In other words, you would be on the surface of a sphere.

So, for absolute precision, the 2-dimensional Pythagorean theorem does not apply. We live in a 3-dimentional world.

For example, if the trip started on the North pole, after moving 8 km to the south (the only direction you could move, along a longitude), the subsequent Eastward movement (along a latitude near but not quite 90 degrees north) would follow an 8 km radius arc around the North pole starting point, and thus you’d never change from being 8 km from the North pole.

Even at or near the equator, there is at least some distortion based on the surface’s curvature.

This may seem to be a trivial, but GPS, for example, would not be much useful at all if the curvature of the sphere were not taken into account.