Two ballet dancers collide in midair. Michael is 60 kg and was going horizontally north at 0.5 m/s just before the collision. Carol is 40 kg and was going horizontally west at 1.0 m/s just before the collision. Just after the collision and well before they land on the ground, they stick together. Assume they have no vertical velocity.
What is the magnitude of the total momentum just after the collision?