You are walking across campus when you see a colorful piece of paper of mass m = 0.20 kg flying through the air. As the paper enters the science quad, it is moving North at v = 4 m/s.
As the paper goes across the quad, the wind continues to blow it, pushing it through the air. But the force and direction of the wind change as the paper flies.
In this case, the coefficients turn out to be