Initially, a 0.400-kg ball moves in the +x direction with a speed equal to 5.00 m/s. This ball collides elastically with an identical 0.400-kg ball that initially is at rest. After the collision, one ball moves at an angle of +40.0° with respect to the +x direction with a speed equal to 3.83 m/s. After the collision, what are the x- and y-components of the velocity, ?⃗ , of the other ball, and the kinetic energies, K, of each ball?

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