If you are driving down a highway at 65 mph with your headlights on, the speed of the light emitted from your headlights as seen by a person standing on the side of the road is
A) c.
B) c + 65 mph.
C) slightly greater than c.
D) none of the above.

Question

Quizplus · Accepted Answer

The speed of light in a vacuum, denoted by c, is a constant and does not change regardless of the speed of the source emitting the light. According to the principles of relativity, the speed of light is always the same for all observers, regardless of their relative motion.

If You Are Driving Down a Highway at 65 Mph