Velma is in a rocket ship moving north past Mort at half of lightspeed relative to Mort. She fires a laser beam forward from the front of her ship. Mort sees the laser beam move at
A) c.
B) 0.5c.
C) slightly faster than c.
D) 1.5c.
E) slightly slower than speed c [lightspeed].

Question

Quizplus · Accepted Answer

According to the theory of relativity, the speed of light in a vacuum is always measured as c, regardless of the relative motion of the source and the observer.

Velma Is in a Rocket Ship Moving North Past Mort