Speed only has meaning in a relativistic measurement. It must be measured from some other object (car versus road is a different speed than car versus the sun).
Object A travels the speed of light towards object B. At the same time object C travels the speed of light in the opposite direction away from B, how fast is object C moving in relation to object A?
True, but with one exception. Whoever measures the speed of light will always get the exact same value, regardless of the motion of the measurer, or of the light source.
According to Big Al (Einstein, that is) space and time will distort in order to keep that true.
So, for example, different observers might not agree on the time a certain light experiment takes, but they will always agree on the speed of light value itself.
Weird - so weird that Big Al never got a Nobel Prize for his Relativity paper - but many experiments have shown it all to be true.
speed of C = speed of A ie:C&A are maintaining the same distance between themselves....B just happen to be between them
2c
Any occupants in the vehicles headed toward each other would be dead twice as fast as before they knew it.
A and C both see each other moving away from each other at the speed of light, not twice the speed of light. Space and time distort to make that happen. This isn’t just theory. It has been tested for slower moving objects that emit radiation, and in fact such distortions (albeit much smaller) had to be accounted for to make GPS work...
PERFECT! We are at two times the speed of light before we start! GOD CREATED EVERYTHING! We can travel at what ever speed HE allows us! That is INFINITY!