are you using x,y to mean unit vectors that are 90 degrees apart? If so
mag(a)=sqrt(-4m)^2 + (-2m)^2
=sqrt (20m^2) and you can finish it.
The magnitude of A=(-4m)x+(-2m)y=
3 answers
how do i finish it?
If you do not know how to get the square root of (20*m^2), you will need a tutor immediately.
sqrt(20m^2)=m*sqrt(4*5)=2m*sqrt(5)
Good luck with physics. I strongly recommend a tutor before you are lost.
sqrt(20m^2)=m*sqrt(4*5)=2m*sqrt(5)
Good luck with physics. I strongly recommend a tutor before you are lost.