A kinematic diagram of a slider-crank mechanism is shown in Figure P6.17. At the instant shown, $v_A=380 \mathrm{ft} / \mathrm{s}$ and $v_B=400 \mathrm{ft} / \mathrm{s}$. Graphically determine the relative velocity of point $A$ with respect to point $B$. Also, determine the angular velocity of link 2 .
(FIGURE CAN'T COPY)