According to Einstein's special theory of relativity, the speed of the light in a vacuum is the same no matter the speed with which an observer travels. So the answer should be A) 0,1c (1/10 the speed of light)
Answer:
B) c (the speed of light)
Explanation:
Adding the velocities of the golf ball and the boat is fine in the classical sense.
But the light photons are not bound by the rules of classical dynamics.
Einstein postulated that the speed of light is constant in every frame of reference, irrespective of the speed of the observer. It is the maximum velocity at which an object can move.
So the laser would appear to move at the speed of light for an observer inside the Hermes spacecraft and to the observer on mars.
It is because, inside the Hermes time will be slowed down to make sure nothing moves faster than light. This is called time dilation
let [tex]T_{o}[/tex] be the time measured inside Hermes,
Time outside Hermes
[tex]T = \frac{T_{o}}{\sqrt{1-\frac{v^{2} }{c^{2} } } } \\\\T = \frac{T_{o}}{\sqrt{1-\frac{(0.1c)^{2} }{c^{2} } } } \\\\T = 1.005T_{o}[/tex]
So 1 second inside Hermes is as long as 1.005 seconds outside Hermes, so the laser would appear to travel at the speed of light to observers outside and inside Hermes.
