Is it physically possible for gravity to accelerate an object with mass to the speed of light?
6384
Will an object always fall at an infinite speed in a black hole?
142441
If rest mass does not change with $v$ then why is infinite energy required to accelerate an object to the speed of light?
46744
Can a massless rope accelerate?
35663
Is there a formula that gives the position of an object depending on the time, but which doesn't allow the object to surpass the speed of light?
34626
How does the propagation of gravity work for photons?
12267
(Almost) double light speed
114449
Gravitational slingshot of light using a black hole/massive object
120287
Is there a maximum possible acceleration?
33967
Is it possible to have a rate of change of acceleration?
37345
Why can't massless particle exceed speed of light?
974
Speed of light in a gravitational field?
19829
Is light affected by gravity? Why?
6845
What if we could give photons some mass?
57305
Relativistic Mass and Gravity
63601
If I'm floating in space and I turn on a flashlight, will I accelerate?
39399
Will free-fall object into black hole exceed speed of light $c$ before hitting black hole surface?
37941
Can light travel slower than the maximum?