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An asteroid of the same mass is necessarily less harmful to Earth than to Mars.
The force of the impact should actually be a description of the momentum of the impact.
We know that momentum is the product of mv. m is the mass, and since it is the same asteroid, m is the same.
Then the deciding factor is v, speed. Although the initial velocity is the same, the atmospheres of Mars and Earth are different, giving the asteroid different atmospheric friction.
This friction slows down the asteroid on the one hand, and reduces its mass on the other.
Since the density of the Martian atmosphere is less than one percent of the Earth's atmosphere, and the impact on the speed and mass of asteroids is much smaller than that of the Earth, an asteroid of the same mass must be less harmful to the Earth than to Mars.
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Certainly less than its damage to Mars, for the following reasons.
1.Earth has a much larger atmosphere than Mars, and asteroids experience much more friction than on Mars.
2.The gravitational pull of the Earth is greater than that of Mars, so the gravitational acceleration experienced by the asteroid is also greater than that of the Earth, and the friction is also increased.
3.The asteroid slows down a little due to the resistance of the Earth's thick atmosphere, but this is negligible.
From the above points, it can be concluded that this asteroid with a diameter of tens of meters is bound to be less harmful to the Earth than to Mars.
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The force should be different, the atmospheric drag, but also the gravitational force, the angle of impact, I think it should affect the impact force.
The asteroid, named 2007WD5, was discovered late last month, the Associated Press reported. It has a diameter of several tens of meters, similar to the meteorite that fell in the Tunguska region of Siberia in Russia in 1908. The energy released by the Tunguska is equivalent to a nuclear bomb with a yield of 15 million tons, and 2,000 square kilometers of local primeval forest were knocked down by the shock wave, and about 60 million trees were scorched.
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Of course not. All the satellites are in their own predetermined orbits, and now technology is particularly advanced, so there will be no such accidents at all.
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Because satellites fly in different orbits. They are affected by the gravitational pull of the planet, so they go their own way and do not collide.
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Because they have their own rules of operation, they walk on their respective tracks, so they don't collide.
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It is because each satellite has its orbit that before launch, our scientific strategists will make an accurate budget to put these satellites into the corresponding orbits.
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Each of them has its own orbit, and before the launch, the scientists also went through scientific budgets, statistics of various data, etc.
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Because the altitude, period, and trajectory of each satellite are different, they are finally put into space after precise calculations, and they play their own unique role in space.
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Satellites move around the sun, and each satellite has its own attraction, so it will have its own orbit, so the satellites do not collide with each other.
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When the satellite is launched, it must be completed within a limited time, and after the launch, it will follow the international convention, each satellite has its own orbit, and the probability of collision is very small.
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Answer: (1) "If two artificial satellites of the earth collide, are the two satellites in the same orbit?" - Not necessarily equal, two satellites can be in different orbits.
On the road, as long as there is an intersection between two tracks, and they reach that intersection at the same time, they will collide.
2)"Are the magnitudes of the period and centripetal acceleration of both necessarily equal? "— Only when the radius of the two orbits is equal, do a circular motion.
The period and centripetal acceleration of the satellite are equal; The orbital radius is different, and the corresponding period and centripetal acceleration are not equal.
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When two satellites collide, the satellites are generally not in the same orbit because the satellites in the same orbit have the same speed and path, and generally do not collide unless they are operating in reverse. Most of the colliding satellites are satellites with intersecting orbits but not the same.
When the orbits are the same, the period and centripetal velocity of the two must be equal.
When the orbits are not the same, the period and centripetal velocity of the two are generally not equal. However, two satellites with different orbits but the same velocity before the collision should still have the same period.
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With the rapid development of science and technology and the continuous exploration of space, we launch many satellites into space every year. With so many satellites converging on the Earth's periphery, will they collide?
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The title is very clear, [if the velocity of the two satellites before the collision is equal] can collide, it means that their orbits have a junction, the gravitational force of the satellite and the planet provides centripetal force, the centripetal force f=m*m r 2=m*v 2 r can get m r=v 2, m is the mass of the planet, we can see that as long as the value of r is fixed, the linear velocity v is correspondingly fixed! In other words, according to [if the velocity of the two satellites is equal before they collide], we can launch their orbital radius to be the same! The period t=2 (r3 gm)1 2=2 r v, the linear velocity is the same, the radius is the same, and the period is the same!
In fact, the orbits of these two satellites are exactly the same, and the reason why they can collide is because their orbits are not on the same plane, much like the previous ** TV station logo! If you imagine what that track looks like, it's not hard to understand!
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Whether the cycle is certain or not is discussed has to be discussed! I haven't rolled it out yet.
But the judgment of the orbit is wrong, imagine that the two satellites are launched from the collision point, it is obvious that the launch direction is different, and the flattening rate of their elliptical orbits must be different.
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When orbiting the earth, the gravitational force of the earth on the satellite provides the centripetal force of the satellite to make a circular motion, and it can be calculated that there is only one optimal velocity for each orbit, and if it is larger than this speed, the satellite will be "thrown out"; Less than this, the satellite will "fall". Therefore, if the two satellites have the same velocity, it is certain that they must be moving in the same orbit.
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Personally, I think this velocity should be tangential velocity, because the tangential velocity v=gmm r 2, no matter how the satellite moves, the force is always only gravitational.
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The motion of the satellite around the same celestial body is, agreeing that the velocity of his radius is the same, and the period which is only related to the radius.
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