If it were possible to launch a projectile at the speed of light from a body with the mass equal to that of our sun but a density such that its escape velocity was the speed of light how far would it go into empty space before its velocity dropped to one metre per second and how long would it take?
The question was only partly related to light escaping from dense bodies but before seeking the answer to light i will re-frame the question as follows;
If a projectile were launched from a body with the mass equal to that of our sun but a density such that its escape velocity was only 1/100th of the speed of light how far would it go into empty space before its velocity dropped to one metre per second and how long would it take? This move the question away from relativity issues. I think the distance is actually 2*G*M but how long does it take?
