Question

v bar=2i+3j and u bar=3i-6j+k find|v bar+u bar|​

Answer 1

Answer:

$\sqrt{35} \: m$

Explanation:

to find (v bar+u bar) we add the X vectors with X vectors, Y vectors with Y vectors & Z vectors with Z vectors

(v bar+u bar)=$(2 + 3)i + (3 + ( - 6))j + (0 + 1)k$

So after adding we get (v bar+u bar|) =

$5i - 3j + 1k$

So to find |v bar+u bar| we need to find the length of the diagonal

So |v bar+u bar| =

$\sqrt{5 { }^{2} + {( - 3)}^{2} + {1}^{2} } \: m = \sqrt{25 + 9 + 1} \: m = \sqrt{35} \: m$

There is your answer