A spaceship that is traveling very fast with respect to your frame of reference,fires a photon beam that travels at speed c with respect to the spaceship.You measure the photon beam's speed to be
A)less than c.
B)more than c.
C)equal to c.

Question

Quizplus · Accepted Answer

According to the theory of relativity, the speed of light (c) is constant for all observers, regardless of their relative motion. Therefore, even if the spaceship is traveling very fast with respect to the observer, the photon beam will still travel at speed c with respect to both the spaceship and the observer.

A Spaceship That Is Traveling Very Fast with Respect to Your