Question

pls answer q no 5 see 50 points only right answer is required

Answer 1

Answer:

7i-14j/root 5

Step-by-step explanation:

vector a= a/magnitude of a

a=i-2j

magnitude= root of 1^2 +2^2=root 5

vector a=1i-2j/root 5

now vector having magnitude equal to 7 and in direction of a=7a=7*(1i-2j/root 5)

Answer 2

Hello!!

Answer in attachment

hope it's help