A particle with an initial linear momentum of 3.72 kg · m/s
directed along the positive x-axis collides with a second
particle, which has an initial linear momentum of 7.44 kg · m/s,
directed along the positive y-axis. The final momentum of
the first particle is 5.58 kg · m/s, directed 45.0° above the
positive x-axis. Find the final momentum of the second
particle.
magnitude
direction
above the negative
x-axis