Special Relativity Question (1 Viewer)

[katasenpai]

"In a thought experiment, a jet is travelling at 0.5 c relative to the ground, towards a train
that is travelling at 0.1 c relative to the ground.

What is the speed of the light emitted from the train’s headlight, as measured by a pilot
in the jet?"

So the answer is 1.0c

Can anyone please explain why?

 

[pikachu975]

Einstein postulated in his special theory of relativity is that the speed of light is constant for all observers, hence it's 1.0c.

 

[katasenpai]

Einstein postulated in his special theory of relativity is that the speed of light is constant for all observers, hence it's 1.0c.

Ohhh right, I was thinking there was some formula that I was missing. Thanks!