Question

Use the dot product to find |v| when v=-6i.

A. 0

B. -6

C. 36

D. 6

Answer 1

D. 6

EDGE 2021

Answer 2

For this case we have the following vector:
v = -6i.
Using product point we have:
v.v = (-6i.). (- 6i)
v ^ 2 = 36
Then, clearing the module we have:
v = root (36)
v = 6
Answer:
The module of the vector is given by:
v = 6
D. 6