No.
If there is friction, speed will usually be slowed down.
C To expound, gravity and light travel at the same speed. * It is a fundamental fact of nature that nothing can travel faster than light, but matter slows light while gravity is not slowed or screened by anything. So light and gravity only travel at the same speed in the vacuum of space away from any mass.
"If the ramp is steeper than the ball will roll faster" can be observed during experiments. "Friction slowed the ball down" and "Gravity caused the ball's motion" are both conjectures (guesses).
No, it does not. The speed of light always remains constant; it may be slowed down slightly when travelling through certain mediums (e.g. water, glass, air), but it cannot increase.
Satellites in a low orbit, however, are slowed by friction with Earth's atmosphere.
No, the speed of gravity is the same as the speed of light, according to the theory of general relativity.
Gravity affects the fabric of space-time. So both space and time will be distorted.
Speed is relative to the speed of light and gravity. So gravity could effect speed.
Gravity, friction, or wind drag.
Gravity does not effect speed of light ,so velocity is constant. Even if it effect the effect is negligible. So in short answer is 3*108ms-1 -Thunder
Yes, gravity moves at the speed of light according to the theory of general relativity proposed by Albert Einstein.
When there's no gravity, light just travels in one direction at the speed of light. Gravity bends the direction at which light travels.