The new perpendicular components are A and 2B. Hence (R=sqrt{A^2+4B^2}).
Previous Question
43. A vector has magnitude 20 N and an x-component of -12 N. If the vector lies in the second quadrant its y-component is
Next Question
45. A vector has magnitude 25 N and an x-component of 7 N. If it points into quadrant I its y-component is