Question

Find a unit vector in the direction of the given vector. Verify that the result has a magnitude of 1.
W=4j

Answer 1

need help

Answer 2

W = 4j = 0i + 4j

Anything of the form W = ai + bj has the magnitude |W| = sqrt(a^2 + b^2)

The unit vector of W will be (1/|W|)*W

this vector will be of length 1 and it will point in the same direction as W

Answer 3

thats kind of hard

Answer 4

I still don't understand. :/

Answer 5

do you see how 0i + 4j matches up with ai + bj

making

a = 0
b = 4