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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
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When the air resistince on a falling object equals the pull of gravity on the object what happens?
-- The net vertical force on it is zero. -- Its acceleration is zero. -- Its speed is constant. -- Its speed is what's often called its "terminal velocity".
If light has mass then it cannot travel at the speed of light if it has no mass it would not be affected by gravity Therefore the math for the infinite mass theory at light-speed must be reexamined?
Wrong, Light has mass and does travel at the speed of light and is affected by gravity! Light mass: hf=mc^2 means m=h/cw. Optical mass is m-red=2.96e-36 kg (w=.75um). Violet would be double 5.92e-36 kg. The math for the infinite mass theory at light-speed is also wrong.- -------- Light has no resting mass, just energy. Gravity is a bend in space, therfore Gravity does not pull at light but the light 'bends' with space
Does gravity affect the speed of light?
Gravity affects the fabric of space-time. So both space and time will be distorted.
Why photon has rest mass zero?
That's related to the fact that it moves at the speed of light. If you look at the formula for mass increase as a function of speed, it should be obvious that the mass of anything that has a non-zero (i.e., positive) rest mass would approach infinity as the object approaches the speed of light - meaning that the speed of light itself can never be reached, since that would give the object an infinite mass (and require an infinite energy). The only way an object can move at the speed of light is for it to have a rest mass zero. In a way, this is hypothetical, since particles such as the photon or graviton, that move at the speed of light, can only move at the speed of light.
Is it possible for your speed to be zero when your acceleration is not zero?
Yes. Zero acceleration means you are not changing your speed (speed up or slow down) or changing direction. Zero acceleration is a constant speed in a linear direction. A speed implies you are moving.
What are the characteristic of light at zero gravity?
When there's no gravity, light just travels in one direction at the speed of light. Gravity bends the direction at which light travels.
What effects the speed of a object?
Speed is relative to the speed of light and gravity. So gravity could effect speed.
Does gravity travel at speed of light?
Gravity wave do, so yes.
When will a body have zero speed?
yes it is possible to get a zero speed 4 a body but nly whn the universe come to a stand still n gravity will b zero...........................
Can speed of light be slowed by gravity or friction?
No.
What is the speed of gravity?
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.
Light from a star travels from earth in a straight line at a constant speed of 300000 kilometers per second What is the acceleration of the light?
The speed of light is a constant, so the acceleration is zero. However, light IS affected by gravity, and gravity causes an acceleration. How does this balance? The light moves at the same speed - the speed of light, abbreviated "c" - but loses or gains energy as the light moves toward or away from the gravity source. In gaining energy (without speeding up!) the frequency of the light is increased and the wavelength of the light (or any electromagnetic energy) is decreased, In losing energy, the wavelength is increased and the wavelength decreased. This could be a trick question, of course. Light from a star wouldn't be travelling from earth, unless we are talking about reflected light, which would not be particularly intense, but it is not out of the question.
What can travel at light speed?
Anything with zero rest-mass. This means photons (quanta of light), gluons (the mediators of the strong nuclear force) and gravitons (the mediators of gravity, if they exist). All other particles have non-zero rest mass and can only travel at sub-light speeds. There has been some mention in the news of neutrinos exceeding light speed. However, those results are still being debated.
If a train were to move with the speed of light what would be its length?
zero
How much zero gravity is there in space?
Zero! that's why it is called zero gravity!
Why is the speed of light important in physics?
The speed of light seems to be a speed limit in the Universe - it isn't possible to transport matter, energy, or information faster than that. Others think that gravity travels faster; Einstein created a universe with an infinate speed of gravity -- it's in the geometry.
How fast is an electron?
From zero to nearly the speed of light. It depends on conditions.
