Question

Given a=2i^ +4j^ and b=3j^ +4k^
Calculate magnitude of resultant.

Answer 1

Answer:

a = 2i + 4j and b= 3j + 4k

So resultant is a+b = 2i +7j +4k

So, magnitude is = √2^2 + 7^2 + 4^2 = √69