The angle of incidence must equal the angle of reflection is always less than the angle of reflection is always greater than the angle of reflection may be greater than, less than, or equal to the angle of reflection

The angle of incidence is not always equal to the angle of reflection.

Explanation:

The angle of incidence might not be equal to the angle of reflection. It depends of the type of surface in consideration. If the surface is smooth, the incident ray will reflect out at the same angle the incident ray makes with surface. This is not the same for a rough or irregular surface.

For an irregular surface, the angle of incident is not equal to the angle if reflection because the reflected ray always reflects at different angles to the horizontal.

it about 600 mph from what i calculated

1/0.14nm = 10^10/1.4 a lot