Question

If "v" is a vector with magnitude of 4 m/s what is the magnitude of the vector ( -2v)?

Answer 1

-8m/s

Step-by-step explanation:

vector quantities like velocity are sensitive to direction the one given is v with a value of 4m/s

and we are asked to get -2v

so first multiply the magnitude 4m/s with 2 to get 2v then consider direction - means it's going on the opposite direction to the one given therefore include - to distinguish direction