Two balls of equal mass $9\mathrm{.}25$ kg undergo a collision. Initially, one ball is moving at a velocity of $12\mathrm{.}0$ m$/$s $[$E$].$ The other ball is moving directly west with a kinetic energy of $1850$ J$.$ After the collision, one ball is moving at $6\mathrm{.}50$ m$/$s $[$N $8\backslash$deg E$].$ What is the velocity of the other ball after the collision?

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