Posted: Dec 10, 2011 9:59 am
by twistor59
starkiller wrote: Would it travel faster than C since it is traveling at C speed before it's affected by the gravitation field?

same question for a photon.


The key point is the bit I highlighted. In order to answer the question, you have to say exactly how you're going to define and measure the speed. The short answer is that if you measure it in a local inertial frame, then no, the speed must be less than c, and for a photon, the speed will be c.

Even in flat space - no gravity, no black holes, I can choose an accelerated frame (non inertial) in which the speed is > c.