Answer:
Hello,
Step-by-step explanation:
[tex]W=\overrightarrow {d}*\overrightarrow {F}\\\\(\begin{bmatrix}12\\24\\40\end{bmatrix}-\begin{bmatrix}2\\20\\16\end{bmatrix})*\begin{bmatrix}-4&11&-3\end{bmatrix}\\\\\\=\begin{bmatrix}10\\4\\14\end{bmatrix}*\begin{bmatrix}-4&11&-3\end{bmatrix}\\\\=10*(-4)+4*11-14*3\\\\=-40+44-42\\\\=-38\\\\|W|=38 (Nm\ or\ J)[/tex]