Collision force calculation power
Starting from the essence of black money,
the essence of black money is actually a special solution generated by a bunch of complex algorithms. A special solution is one of the infinite (in fact, bitcoin is finite) solutions that can be obtained from the equations. Every particular solution can solve the equation and is unique[ 8] In the metaphor of RMB, black money is the serial number of RMB. If you know the serial number of a note, you have the note. The process of mining is to constantly seek the special solution of the equation system through huge amount of calculation. The equation system is designed to have only 22 million special solutions, so the upper limit of bitcoin is 22 million[ 8]
to mine the dark coin, you can download the special dark coin calculation tool, register various cooperative mine pool websites, fill the registered user name and password (miner user) into the calculation program, and then click the operation to officially start. After completing the installation of the darkcoin client, you can directly obtain a darkcoin address. When others pay, you only need to post the address to others, and you can pay through the same client. After installing the Black Coin client, it will distribute a private key and a public key. You need to back up your wallet data containing your private key to ensure that your property is not lost. Unfortunately, if the hard disk is completely formatted, the personal dark coin will be completely lost
It's a weird, but very interesting question
I believe that when many people see this problem, they scold the subject in their heart: & lt; Isn't this bullshit& rdquo;
many people must feel that & lt; This RMB is called RMB! No change of name, no change of surname! RMB& rdquo;
this term is usually used in more formal occasions. For example, let's go to the bank to see the exchange rate exchange. This is what is displayed on the electronic screen. This is our code name of RMB. In this system, the code for us dollar is USD (United States dollar), the code for Japanese yen is JPY (Japanese yen), and the code for British pound is great British pound (GBP)
it is worth mentioning that the code of Hong Kong dollar is HKD, the full name of Hong Kong dollar; The code of new Taiwan dollar is TWD, new Taiwan dollar
has no special meaning. Just don't think about it
to sum up a little:
there are two ways of addressing RMB in foreign ordinary people, one is yuan, the other is RMB
in official narration or on more formal occasions, the foreign name of RMB is CNY, that is, Chinese yuan
in fact, all the above are foreign names. In fact, the question may be that why foreign currencies are so simple in China
Japanese currency is Japanese yen, American currency is US dollar, and European currency is Euro. At most, there are some strange things such as Thai baht and Dutch guilder, which is not a special trouble to remember
in fact, this is & lt; Blame & quot; We are used to the great words and expressions of our motherland & hellip& hellip;
don't ask, asking is 5000 years of History & hellip& hellip;
there is also "impact energy". Not to mention what is smashed, how can it be regarded as impact energy
his energy is 0.51kg * 0.98m/s ^ 2 * 1.3m
it's hard to say what his impact energy is. If it's hard enough, the impact energy can still be 0. If it's soft enough, the impact energy can reach the maximum value calculated above
Law of conservation of energy, the velocity of
at the moment of impact with
ground can be obtained, that is, 1 / 2
MV & #= MGH, then v = √ 2bh
from the impulse
formula
we can get f = m △ V / △ t. We need to know the minimum time for the object to contact the ground and the change of velocity in this time
the elastic force (internal force) proced by elastic collision is a variable force, so we can only solve its equation about time (or collision deformation)
we need to use the knowledge of calculus
are you in college or high school?
this question is too evil, and I won't count it if I have the conditions.
F = ma
m = 60kg
A =
we need to know the acceleration of the human body at 60km / h, which can also be approximated to the acceleration of the B-pillar. It needs to be measured by experiment or simulation, but the human body is not the m of the whole human body, so it is only a rough calculation. Looking at the acceleration of each point in the contact process between the human body and the steering wheel, of course, the data must be a curve, which itself is the data in the concept of time.
If an object with a mass of 1kg falls freely, an elastic collision occurs, and the collision time t is 0.01s
when an object falls from a height of 1m, the impact force to be calculated is 885.438n
the calculation process is as follows:
momentum conservation and impulse conservation
the falling velocity v = √ (2GH) = √ (2 × 9.8) ≈ 4.427 M / s
MV & # 39- MV=FT，F=MV'- MV ÷ T=1 × 4.427+1 × 4.427 ÷ 0.01 = 885.438 (Newton)
{rrrrrrr}
extended data:
in an ideal case, after the collision, the deformation of the object can be recovered, there is no heat and sound, and there is no loss of kinetic energy. This kind of collision is called elastic collision, also known as fully elastic collision. True elastic collisions occur only between molecules, atoms, and even smaller particles. In daily life, when the hard wood ball or steel ball collides, the loss of kinetic energy is very small and can be ignored. Usually, their collision can also be regarded as elastic collision
According to Newton's theory, the complete elastic collision is one with coefficient of restitution. Please note that the latter is completely equivalent to the former, but it is easier to make a quantitative analysis of the problem by using the latterLaw of conservation of momentum:
M & # 8321; v₁+ m₂ v₂= m₁ v₁&# 39;+ m₂ v₂&# 39;
Law of conservation of energy:
(1 / 2) M & 8321; v₁&# 178;+ 1/2m₂ v₂&# 178;= 1/2m₁ v₁&# 39;&# 178;+ 1/2m₂ v₂&# 39;&# 178;
free fall is the motion of a conventional object with zero initial velocity only under the action of gravity, which is called free fall motion. Free falling body motion is an ideal physical model Free fall) is any object under the action of gravity, at least in the initial, only gravity as the only force under the condition of inertial trajectory, is the initial velocity of 0 uniform acceleration motion. Since this definition does not specify the direction of the initial velocity, it also applies to the initial upward movement of the object
In the case of free fall, gravity outside the atmosphere proces weightlessness, sometimes any weightlessness state is called free fall e to inertial motion. This may also apply to weightlessness because the body is far away from gravitation. Although the strict definition of technical application does not include the movement of objects subject to other resistance, such as air resistance, in non-technical use, will pass through the atmosphere without deployment of parachutes, or lifting devices, also often referred to as free fallresistance in this case, to prevent them from procing a completely weightless state, thus parachuting "free fall" after reaching the terminal speed to proce a sense of body weight is supported in an air cushion
the motion of free falling body originates from gravity. The motion of a body falling from a relatively static position under the action of gravity is called free falling body motion (its initial velocity is VO = 0 m / s). For example, it is a physical phenomenon that occurs when a hand holds an object without any external force
the law of free fall: v = GT, H = 0.5gt & # G acceleration of gravity, t falling time, H falling height, V is the velocity at time t)