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Two rockets are launched. Rocket A has a mass of 1656.4 kg and a velocity of 5.0 m/s at an angle of 15.9 degrees measured off of the positive horizontal axis. Rocket B has a mass of 1318.7 kg and a velocity of 960.8 m/s at an angle of 42.5 degrees measured off of the positive horizontal axis. Find the net horizontal momentum (in kgm/s) of the two rockets.