Исходники иллюстрации

\documentclass[tikz]{standalone}\input{pre.tex}\begin{document}\begin{tikzpicture}

    % \draw[fill=black] (-4,-2) coordinate (I) circle (1pt);
    % \draw[fill=black] (0,0) coordinate   (II) circle (1pt);
    % \draw[fill=black] (4,-2) coordinate  (III) circle (0pt);
    \draw[interface] (0,0) rectangle (12,-0.5);
    \draw[thick] (0,0) -- (12,-0);

    \draw[axis,->] (2.05,0.25) -- ++(0,3) node[above] {$+y$};
    \draw[axis,->] (2.05,0.25) -- ++(3,0) node[right] {$+x$};
    \draw[force,->] (2.05,0.5) -- ++(-1,0) node[left] {$\vec{v}^\text{ п}$};
    \contourlength{1mm};
    \begin{scope}[rotate=-45]        
        \draw[] (1,1.5) rectangle ++(0.3,3);
        \draw[fill=magenta] (1,3) rectangle ++ (0.3,0.4);

        \draw[force,->] (1.15,3.4) -- ++(0,2) node[right] {$\vec{v'}_0$};

        \node[below]  at (1.45,3.4) {{$m$}};

        \draw[fill=magenta] (1.1,1.8) circle (0.5cm);
    \end{scope}

        \node  at (2.05,0.5) {\contour{white}{$M$}};

\end{tikzpicture}\end{document}