A spaceship is observed by a stationary observer to be moving at 0.600 c. A laser beam is directed straight ahead from the front of the spaceship. How fast does the laser beam travel relative to the stationary observer?
A) 4.00 c
B) 1.60 c
C) 1.00 c
D) 0.750 c
E) 0.480 c

Question

Quizplus · Accepted Answer

According to Einstein's theory of special relativity, the speed of light is constant in all reference frames. Therefore, the laser beam will travel at the speed of light relative to the stationary observer, which is 1.00 c. The spaceship's velocity does not affect the speed of the laser beam.

A Spaceship Is Observed by a Stationary Observer to Be