snazzyhumanz snazzyhumanz Today at 1:22 PM Physics Answered Two birds collide in midair. Before the collision, their combined momentum was 15 kg•m/s to the north. What is their combined momentum after the collision? A. 15 kg•m/s south OB. 15 kg•m/s down O c. 15 kg•m/s north D. 15 kg•m/s east