Question

A vector has components (4,2). When the vector is multiplied by the scalar 9, how
does its magnitude and direction change?

magnitude: unchanged; direction: increases by 180°
magnitude and direction are both unchanged
magnitude: increases by a factor of 3; direction: unchanged
magnitude: increases by a factor of 9; direction: unchanged

Answer 1

Hint:

Answer 2

hmm leaning towards C. now correct?

Answer 3

Can you please state exactly what is said in C? THank you.

Answer 4

magnitude: increases by a factor of 3; direction: unchanged. here it is

Answer 5

why 3?

Answer 6

wait nevermind it should be 9 instead of the 3

Answer 7

Good job! :)

Answer 8

thanks B)

Answer 9

You're welcome! :)