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If gravity waves travel at the speed of light and black holes' escape velocity is much greater than the speed of light then how can gravity waves escape a black hole?
Wiki User
∙ 13y ago
Gravity is not a 'wave', it is a field of curvature of space-time caused by objects with mass. A black hole contains the mass of a star, compressed to the space of a single atom (a singularity), the compression of so much mass into such a small space, is why the black hole has such a powerful gravitational pull.
Wiki User
∙ 13y ago
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How does gravity escape a black hole?
Gravity is a force acting on masses. It doesn't escape, since it directly alters spacetime; it doesn't travel along it.
The speed and direction a rocket must travel to break away from a planet's gravitational pull is called?
To escape the gravitation pull of an object you must travel at or in excess of the escape velocity. The direction of the escape velocity is always radially outward from the center of the object.
Do missiles travel faster than sound?
yes, Even a rifle bullet may travel faster than sound, but even then, it cannot reach escape velocity. Rockets seem to have beaten the escape velocity problem. A space missile will travel more than 11.2 km/s, which is about 10 times the speed of a bullet. +/- [Sound velocity ~ 330m/s.] The first body to leave the Earth was the Sputnik.
Why does light get bent or pulled into a black hole and can't get out?
It might seem counter-intuitive that light would bend in the influence of gravity since the carrier of electromagnetic radiation (the photon) is massless. One can explain the bending of light or its being pulled into a black hole and consequent inability to escape by appealing to general relativity, which attributes gravitation to a spacetime curvature caused by mass. Locally one might perceive light only traveling in straight lines (geodesics), however, to a distant observer, it would seem that a beam of light is bent in the direction of the source of gravity owing to this curvature. The greater the mass, the more extreme the curvature. General relativity predicted the possibility of a seeming infinite curvature and thus regions of spacetime which light itself could not escape. One way of viewing this is that a greater mass would have a greater escape velocity, and as one considered heavier and heavier objects that at some point, this escape velocity from it would exceed the finite speed of light. Since escape velocity decreases with increasing distance from the mass, the theory would require a boundary where the escape velocity was exactly equal to the speed of light at a certain distance (the event horizon; spherical in shape for a non-rotating black hole). Within this boundary it would be impossible for light or any object to escape because it could never travel fast enough as it could not exceed the speed of light. From the spatial curvature viewpoint, to a distant observer there would be no direction or path a beam of light might take - regardless of the direction it went in - where it would not curve back upon itself to hit center of the black hole (the singularity).
Explain using Newton's second law Why can you throw a golf ball further than a bowling ball even though you throw both at the same angle and with the same amount of force?
both will have same kinetic energy ,so forward velocity will be lower for bowling ball , the time to go up then down to the ground under gravity will be the same for both, so distance = velocity * time , so lighter (golf)ball will travel further because its velocity is higher second thoughts, assume launch angle same for both, ball with greater launch velocity will travel further. (laws of ballistics) if work done on ball (f * d) is same on both , the lighter ball will have greater launch velocity, though both will have same kinetic energy at launch
How fast do spaceships go?
To break the pull of gravity and escape the earth's pull (escape velocity) you have to travel 7 miles per second or 25,000 mph.
How is a rocket able to escape earth's gravity?
It can never escape it entirely. It can, however, travel fast enough that the increasing distance outweighs the effect of the decreasing gravity. On earth, this velocity is about seven miles per second.
How fast does the average spaceship go?
To break the pull of gravity and escape the earth's pull (escape velocity) you have to travel 7 miles per second or 25,000 mph.
How fast does a Spaceship have to go to get out of the atmosphere?
To break the pull of gravity and escape the earth's pull (escape velocity) you have to travel 7 miles per second or 25,000 mph.
Difference between probes and satellites regarding orbital and escape velocity?
a probe need to travel escape velocity while a satellite travel orbital velocity.
Why does a space shuttle have to travel so fast?
Space shuttles must travel at 11km/s so that they can escape the force of gravity. the force of gravity is approximately 9.81. If you don't travel at a greater speed than the force of gravity, the rocket will not launch.
A rocket will move upward as long as the thrust is greater than the force of gravity?
Actually for some time even after the thrust is no longer greater than gravity. When the rocket's thrust is greater than gravity, it will be accelerating (its velocity upwards will increase). When the rocket's thrust is no longer greater than gravity, at that moment it will still have an upward velocity, so it will still travel upwards - it will only travel more and more slowly upwards as gravity starts to sap the rocket's upward velocity towards zero. Once its velocity reaches zero, if gravity is still winning over the rocket's thrust (if any), then it will start to fall back towards the ground.We are assuming a simplistic model (no air resistance, no super-unlucky collisions with meteors, etc.), but this is the basic idea.
Why must a spacecraft reach escape velocity to be able to go to space?
A rocket needs to travel at 7 miles-per-second or about 25,000-miles-per-hour to leave the pull of earth's gravitational force, and reach outer space. This speed is known as escape velocity.
What would happen if a projectile were thrown with greater velocity?
A projectile thrown with a greater velocity would travel a greater distance. Velocity is not just speed but direction as well.
What would happen if the projectile were thrown with greater velocity?
A projectile thrown with a greater velocity would travel a greater distance. Velocity is not just speed but direction as well.
What would happen if the projectile were thrown with a greater velocity?
A projectile thrown with a greater velocity would travel a greater distance. Velocity is not just speed but direction as well.
How do you travel unto space?
You need a spacecraft that will exceed escape velocity.
