Guys, does anyone know the answer?
get what would happen if a needle hit the earth at the speed of light from EN Bilgi.
What if a Needle hit the earth's surface from Space at the Speed of Light?
I found out that someone had asked this question and ended up being ridiculed by bullies online. Some of them irrationally responded to this question with untold bankruptcy of self-composure.
What if a Needle hit the earth's surface from Space at the Speed of Light?
CEO at Ugacomp Technologies
Published Mar 5, 2021
I found out that someone had asked this question and ended up being ridiculed by bullies online. Some of them irrationally responded to this question with untold bankruptcy of self-composure. Sometimes you don’ t have to demean anybody when responding to them. People who believe in learning and seeking knowledge are always curious about things that seem impossible for average understanding. If you have potential to unleash knowledge, don’t ridicule questions pelted at you by calling them meaningless but rather use your rationality & reason to respond respectfully.
When I was young, I liked Physics & Chemistry so much. These were my favorite subjects in secondary school. At some point, I thought I would end up being a theoretical physicist but later turned out to be so passionate about information technology. Regardless, I have a huge pile of physics and chemistry books on my computer, which I like to read when doing research on a couple of things. I'm also a curious person and this drives me to read them to understand things.
This question is mind-blowing and I would be curious to find out what would happen if a needle hit the earth from space at the blazing speed of light. Of course this could be a hypothetical situation and nobody is saying it could happen in the real world we live in today.
First of all the existence of speed of light is real and it is not theoretical or hypothetical. It is proven that light travels at the speed of 299792458 m/s: meaning that if we had an object in the real world, travelling at such speeds, it would be able to cover about 1,080,000,000 Kilometers or 6,71,000,000 miles in just one hour. Such mind-blowing, isn’t?
In reality, an object like a needle cannot travel to reach or go beyond the speed of light. Based on Albert Einstein’s Special Relativity theory (E=mc^2), he considered light as the final cosmic speed limit, which can’t be surpassed by any other object. Of course all bodies in the universe, including us; humans live under the cosmic jurisdiction, governed by the laws of science & physics crafted in it. In our entire universe, it is only "blackholes" that have been found to defy every law of science or physics. It is actually a mind-blowing cosmic mystery that has continuously left the geniuses of the world look stupid because they can’t explain exactly what drives them to be so ruthless against the cosmic realms of physics. To a Christian like me, I believe that the truth about some cosmic mysteries like the black holes have been intentionally encrypted or sealed off by super-natural intelligence, far more superior to make man's understanding of things in the cosmos, incredibly stupid.
Back to Eistein, we learn that when an object moves faster, its mass increases and light is considered to have an infinite mass due to its massive speed.
In the real world, objects that travel have mass of varying quantities. As we know, traveling objects achieve speeds by covering certain distances at a given period of time.
Basically, Speed (v) = distance (d) X time (t)
Distance and time are two important variables in determining the speed of any moving body. However, objects also need energy to travel to reach certain distances in a given period of time. When an object has more mass, it uses more energy to achieve maximum speed so it can reach a certain distance.
For an object like a needle to reach the speed of light, an infinite amount of energy input would be required. Infinite energy is something we all know is realistically impossible to achieve in the world we live in today
What about if this needle travelled at the speed of light to hit the earth from space in a hypothetic scenerio?
One thing you need to first understand is that entering the earth’s atmosphere is very complex especially for small bodies coming from outer space. We’ve actually seen this through stray meteoroids that attack our atmosphere from space but end up burning out without reaching the earth’s surface. In reality, a very tinny needle traveling at greater speeds from space towards earth is much likely not to survive this enormous pressure, originating from the earth’s atmospheric gases thus it would easily burn out just as meteoroids do whenever they hit our atmosphere.
Since this is a hypothetical scenerio, let’s assume the needle successfully penetrates through the earth’s atmosphere at a blazing speed of light, heading to the surface. This would be a doom’s day for our planet, earth. The needle could unleash something I’m calling the “kinetic bombardment” of the earth. For us to understand this impact very well, we need to first understand the concept of translational kinetics in classical physics.
When determining the kinetic energy of a translational body, the two important variables here are the mass of the moving object (m) and its speed (v). We use the equation below;
KE = 0.5*m*v^2 OR KE = 1/2 x m x v^2
This equation means that the kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity. In other words, an object with twice the mass and equal speed will have twice the kinetic energy while an object with equal mass and twice the speed will have quadruple the kinetic energy. For example, when the speed of a moving body increases by two fold, its kinetic energy will increase by a factor of four. Additionally, a threefold increase in speed, leads to kinetic energy increase by a factor of nine.
What happens when a needle hits the Earth at...
The Earth would explode! And so, of course, Everyone Dies™.
Facts and stories Science
What happens when a needle hits the Earth at the speed of light?
4/29/2020 4,841 views
by Amogh Joshi via QUORA.COM
With classical physics, you would expect nothing to happen.
The mass of an average needle is around 1 gram, or around 0.001 kg.
The mass of our planet is an immense 5.9 x 10^24 kg.
The needle is moving at the speed of light, or around 300,000,000 m/s.
The Earth is moving at a much lower speed, 30,000 m/s.
And if you use conservation of momentum, you will find that there is literally no reaction between the two. Although the needle is moving at such a high speed, the mass of the Earth is so comparatively immense.
However, with relativity, as an object approaches the speed of light, its momentum approaches infinity.
Because of this, it doesn’t matter what the mass or velocity of the object the particle at the speed of light is striking, since it has infinite momentum, the collision will result in a massive loss of kinetic energy.
And such a wave of kinetic energy, combined with the impact of the collision, will probably destroy our planet and all life on it.
So let’s hope that a harmless needle doesn’t suddenly get a grudge against our planet and decide to attack it.
Can you imagine a single needle to be so dangerous?
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What are your thoughts on this subject?
Clive Reed 4d ago
As the needle entered the atmosphere it would burn up, but in doing so the Kinetic energy released in the process would be what would destroy the planet. Think of it like a Tsunami, a ball of energy that would become big enough to envelope the whole planet.
David Fitch 2m ago
So the needle wouldn’t burn up as it entered our atmosphere?
Elsy O. Stromberg 4m ago
I'll go with classical physics.
vasily tchaikovsky 7m ago
for crazy imaginations for genious Albert smile
Joyce Bigham 10m ago
amazing we as humans can a view drop a needle a could destroy us all and the out blanket for love for man kind come as little as a sewing needle if we survive the speed of light yet to make a square we all should be prayed up if GOD COME FOR US HE S OUR ONLY HOPE.
Richard Rubright 1y ago
What force would accelerate the needle to the speed of light as it approaches infinite mass?
Vikram Mangaldas Ahiwale
its a good example to understand i.e e=mc^2 which explains that kinetic energy affects its course on the object with speed taken into account. So just imagine an asteroid or a meteorite hitting planet earth.
Olaf Krause 1y ago
This is a very nice example applying the theory of realtivity! In contrast to a photon, the needle has a mass greater than zero. So let's hope, it never hit the earth at the speed of light.
Chas Kirtz 1y ago
If this is true, why wouldn’t a meteorite striking the earth do the same thing ?
Axel Brosi 1y ago
needle would burn up as it enters the Earth's atmosphere
What If a Needle Hits the Earth at the Speed of Light?
We are used to anticipating danger from outer space. A huge almost unknown space, hostile to humans, and no wonder colossal explosions take place, asteroids and comets travel at tremendous speed…
What If a Needle Hits the Earth at the Speed of Light?
We are used to anticipating danger from outer space. A huge almost unknown space, hostile to humans, and no wonder colossal explosions take place, asteroids and comets travel at tremendous speed, there are several black holes out there and all this can potentially cause the death of the Earth. But what about something small? For example, an ordinary sewing needle. What if one finds itself in space, accelerating to the speed of light, and then crashing into our planet. Any object consisting of matter can’t move at the speed of light or faster. So, scientists from NASA are unlikely to ever consider such a disaster, well, we’ll do it for them today. Today you’ll see how dangerous such small things can be if they are properly accelerated and at the same time, you’ll learn about another strange scenario of the end of the world.
Our planet is constantly bombarded by various cosmic bodies we don’t even notice most of them, they just burn up in the atmosphere. Sometimes celestial bodies manage to reach the visibility zone and even make some noise, such as the Chelyabinsk meteor, or the very asteroid that caused the dinosaurs to become extinct. But the fact is that all these celestial bodies move very slowly, considering the scale of the universe. For example, the Chelyabinsk meteor was moving at a speed of 60–69,000 km/h, that’s 37–43,000 mi/h.
Now, imagine that one day scientists report a piece of terrible news, that an unknown object is approaching Earth at the speed of light, it’s very small, the size of a needle or even a grain of sand. If at this stage you had time to think that there’s nothing to worry about, it is in vain, what seems ridiculous at first glance poses a danger to our planet, the consequences would be terrible. It’s all about speed. For example, take a car, if it moves at a speed of about 50 km/h or 31 mi/h and hits a person, the person will survive, if you accelerate the car to 65 km/h or 40 mi/h then the collision could result to death or serious injuries. The speed of light is almost 300,000 km/s or 186,000 mi/s, this is very fast. In nature, visible light and other types of electromagnetic radiation travel at the speed of light and also possibly gravitational waves too. Scientists believe that massive particles can’t move at the speed of light, they can only come close to it. For example, protons are accelerated just to near light speed in the Large Hadron Collider. So, a needle approaches the Earth at the speed of light or, a grain of sand, in general something very small.
The length of a sewing needle is about 35 millimeters or 1.4 inches. The size of a large grain of sand can reach up to 5 millimeters or 0.19 inches. For comparison, the same Chelyabinsk meteor had a diameter of about 20 meters or 66 feet. The difference is huge, but in this case, the size does not matter. Even a tiny object having accelerated to tremendous speed will become deadly, it won’t burn up in the atmosphere and will not explode in flight. The bonds that ensure the integrity of an object will stop working. A grain of sand or a needle will simply become a bunch of atoms passing through the air, but the real danger is kinetic energy. I won’t bore you with calculations, we’ll immediately get to the result. The kinetic energy, for example of a grain of sand that has nearly accelerated to the speed of light, will be equal to the kinetic energy of an object weighing 100 tons that are falling from a height of a 15 storied building. It is as if the largest part of the statue of liberty fell from its pedestal in one fell swoop. So, if a needle rushing at the speed of light strikes the Earth, will scientists have time to notice it? It’s hard to say but in a collision with the surface of our planet, all the kinetic energy will go into the energy of an explosion, the power released will be similar to the energy of a nuclear bomb, approximately 43 kilotons of TNT and that’s a lot, the bomb Fatman dropped on Nagasaki had a capacity of about 21 kilotons of TNT. Just compare the two, an ordinary sewing needle and a nuclear bomb that destroyed an entire city.
To understand, what kind of destructions such a collision can make, you need to choose a city. For example, in New York, where else should a needle moving at the speed of the light can strike (Just kidding). If an atomic bomb of the same power were dropped here then most of Manhattan and the surrounding area would be destroyed, even at a distance of 4 kilometers or 2 and a half miles, windows would break, people who are a little closer to the epicenter would suffer serious harm. For example, all the inhabitants of Hell’s kitchen would get 3rd-degree burns, the central park will be almost completely burned. People who are within 1 and a half kilometer or less than a mile of the place where the bomb falls are likely to die within a month. However, the needle bomb can also penetrate below ground creating a huge crater with its explosion, and yes, the statue of liberty will definitely fall from its pedestal, perhaps right into the water. But, what about the big wave? There is another version of how this might go, it’s less scientific but much more spectacular, I’m sure you Wanna see it.