What is the direction of the resulting vector if a vector of 2 units north is added to a vector of 2 units south. a. south c. se b. north d. the two vectors cancel each other out.

d. The two vectors cancel each other out.

Explanation:

We have two vectors:

- Vector 1: 2 units North --> we can write it as v1 = +2, taking North as positive direction

- Vector 2: 2 units South --> we can write it as v2 = -2, taking South as negative direction

Since the two vectors are along the same line, their resultant can simply be calculate as the algebraic sum of their magnitude, so it will be

so the two vectors cancel out and their resultant is zero.

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.