If a fly collides with the wind shield of fast moving bus ,which object experiences an impact force with a larger magnitude ?

How do you tell if someone actually cares about you? and just say they do?

How would a small bar magnet be oriented when placed at position x?

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?