Physics
posted by Kellie .
A particle with an initial linear momentum of 2.28 kg · m/s directed along the positive xaxis collides with a second particle, which has an initial linear momentum of 4.56 kg · m/s, directed along the positive yaxis. The final momentum of the first particle is 3.42 kg · m/s, directed 45.0° above the positive xaxis. Find the final momentum of the second particle.
find the magnitude and direction above the xaxis
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