Two smooth disks A and $B$ each have a mass of $0\mathrm{.}5$ kg $.$ Both disks are moving with the velocities shown when they collide. Suppose that $(v_A{)}_1=6\frac{m}{s},(v_B{)}_1=5\frac{m}{s}.($Figure $1)$

Part A

Determine the coefficient of restitution between the disks if after collision $B$ travels along a line, $30$ counterclockwise from the $y$ axis. Express your answer using three significant figures.

$e$

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Figure

$1$ of $1$