Question

how does the scalar addition obey ordinary addition rule explain please

Answer 1

HEY MATE!!!!

In scalar addition we have to do only the sum of magnitude as we know that the scalar quantities don't have direction...

since it is the scalar quantity the direction will be same for all the magnitudes.

on the other hand if it was a vector addition then it should be with two different directions which are considerable show the resultant vector needs to be calculated by vector addition method...

HOPE THIS HELPS....