Which pair of vectors below, if summed, would create a state of equilibrium (a resultant of 0i + 0j)?

a. 0i + 0j and 2i − 2j

b. 2i + 2j and 2i − 2j

c. 2i + 2j and -2i − 2j

d. 2i + 0j and 0i + 2j

The coordinates of a resulting vector are calculated by algebraically adding the respective components of the vectors.

In other words: to sum two vectors we only have to sum, respectively, the components i and the components j of each vector.

For example, the pair of vectors 2i + 2j and -2i − 2j:

2i + (-2i) = 0i

and

2j + (-2j) = 0j

Then, the resultant is:

0i + 0j

Therefore, the correct option is c.

If we try with the other options, the resultant will not be 0i + 0j:

a. 0i + 0j and 2i − 2j:

2i-2j

b. 2i + 2j and 2i − 2j:

4i-0j

d. 2i + 0j and 0i + 2j:

2i+2j

colorectal cancer may also develop from areas of abnormal cells in the lining of the colon or rectum. this area of abnormal cells is called dysplasia and is more commonly seen in people with certain inflammatory diseases of the bowel such as crohn's disease or ulcerative colitis.