A few thoughts arise from this.
1. If the ship is travelling at c, observer A would not see the disc until it hit her.
if observer A is not moving in reference to the point that the
speed measurements are taken from to obtain the speed of the
spacecraft then observer A would never see the spacecraft.
unless his / her eyes can detect the light from the flashlight
moving at 2xc
and the only light that is available for any observer to "see" is the light from the flashlight that is moving at 2xc
2. If the ship is infinitely length contracted, it has no length. Can it be said to exist?
there is no physical reason for the spaceship to be contracted
in length.
so fake math and illusion or not the ship would exist and would
not contract in length or width or anything unless there is
a force that crushes the spaceship and no force of that magnitude
has been included.
3. If the ship has a "headlight"; in the RF of the observer, the light and the ship would reach her at the same time.
the light from a headlight traveling at 2xc would reach the observer first followed by the ship that is moving at 1xc.
she (her eyes ) would never "see / detect" the light or the ship.
and would never feel the impact.
unless her pain receptors send signals to her brain faster than c
and her brain processes that data faster than c.
However, in the RF of the astronaut, the light would be leaving the ship at c. Does this mean that the astronaut would see the observer, but she would not see the ship?
even though the astronaut can see the light "inside " it is only because he and the ship are traveling at c , he would not be able
to see any light reflections that would reflect off of observer A
from the headlights.
the astronaut would never "see" the observer because he is
moving towards the observer at 1xc and any light reflecting off
of the observer would be traveling at 1xc which adds up to 2xc
his "eyes" cannot detect light below the visible light spectrum.
