Question

Part A The components of vector A are Az=+9.2and Ay=-3.5, and the components of vector B are given by Bz=-3.6 and By=-6.4. What is the magnitude of the vector B- A? 10 16 18 13 8.5

Answer 1

$\hspace{-0.25 in}\bold{A} = 9.2 \bold{i}-3.5 \bold{j} \quad $and$ \quad \bold{B} = -3.6 \bold{i} - 6.4 \bold{j} \\ \bold{B} - \bold{A} = -3.6 \bold{i} - 6.4 \bold{j} - (9.2 \bold{i}-3.5 \bold{j}) = -12.8 \bold{i} - 2.9 \bold{j} \\ B = \sqrt{B_x^2 + B_y^2} = \sqrt{(-12.8)^2 + (-2.9)^2} = 13.1$