How to calculate the impact of people falling from high altitude
Publish: 2021-05-08 03:24:50
1. It should know the impact time
50kg object falling 3000m speed is about 245m / S (g = 10m / S2), if the impact time is 0.5 seconds, then use the formula: MV = ft to get f = 24500n.
50kg object falling 3000m speed is about 245m / S (g = 10m / S2), if the impact time is 0.5 seconds, then use the formula: MV = ft to get f = 24500n.
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2, the non regular app store can't find it
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4. According to: impulse = momentum
ft = MV
t is the time from the object touching the ground to the object standing still, that is, the time of ground deformation
m is the mass of the object
V is the velocity in contact with the ground, that is, the initial velocity of ground deformation
m is known, V can be calculated, and T has different values for different ground and objects (steel ball falling on cement and mud, rubber ball falling on cement and mud), which is difficult to calculate. We need the empirical data of the final deformation and the deformation variables of the object and the ground at the time of landing!
ft = MV
t is the time from the object touching the ground to the object standing still, that is, the time of ground deformation
m is the mass of the object
V is the velocity in contact with the ground, that is, the initial velocity of ground deformation
m is known, V can be calculated, and T has different values for different ground and objects (steel ball falling on cement and mud, rubber ball falling on cement and mud), which is difficult to calculate. We need the empirical data of the final deformation and the deformation variables of the object and the ground at the time of landing!
5. Solution: set the height of a kilogram of things falling from the air to be h meters. From the formula of free falling body:
∵ H = 1 / 2xgt & # 178, M = 1 kg = 0.5kg
t = √ 2H / g
and VT = GT = g √ 2H / g
F = MVT
= MXG √ 2H / g
= 0.5x9.8kgm/s; √0.2041H
=4.6kgm/s² X0.4518√H·s²
= 2.078 √ H (Newton)
note: the impact force is proportional to the height change of H, and the greater the H is, the greater the impact force is
A: the impact force of a kilogram of things falling from high altitude is 2.078 √ hnon.
∵ H = 1 / 2xgt & # 178, M = 1 kg = 0.5kg
t = √ 2H / g
and VT = GT = g √ 2H / g
F = MVT
= MXG √ 2H / g
= 0.5x9.8kgm/s; √0.2041H
=4.6kgm/s² X0.4518√H·s²
= 2.078 √ H (Newton)
note: the impact force is proportional to the height change of H, and the greater the H is, the greater the impact force is
A: the impact force of a kilogram of things falling from high altitude is 2.078 √ hnon.
6. What's the rush between going and coming?
7. F = DP / DT, momentum change and action time are affected by the material and shape of the object and the ground, not a simple problem
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MLM refers to the way that the organizer or operator develops personnel to calculate and pay remuneration to the developed personnel based on their number of directly or indirectly developed personnel or sales performance, or require the developed personnel to obtain the qualification to join in on the condition of paying certain fees. Its purpose is to seek illegal interests, disrupt economic order and affect social stability
it is necessary to judge whether it belongs to MLM from the legal provisions and specific operation mode. At the same time, you can inquire about the company's situation on the national enterprise credit information network< According to Article 7 of the regulations on the prohibition of pyramid selling, the following acts belong to pyramid selling:
(1) organizers or business operators, through developing personnel, require other personnel developed by the developed personnel to join, and calculate and pay remuneration (including material rewards and other economic benefits, the same below) to the developed personnel based on the number of personnel developed directly or indirectly, Seeking illegal interests
(2) the organizer or business operator, through the developer, requires the developed person to pay fees or pay fees in disguised form by way of subscribing for commodities, so as to obtain the qualification of joining or developing other persons to join and seek illegal interests
(3) the organizer or business operator, through the development personnel, requests other personnel developed by the development personnel to join, forms the relationship between the upper and lower line, and calculates and pays the online remuneration based on the sales performance of the lower line, so as to seek illegal interests< The obvious characteristics of MLM are as follows:
1. The price of MLM goods deviates from the actual value of the goods. Some MLM goods have no use value and service items are fictitious
2. The income of participants does not come from the reasonable profits from selling procts or services, but from the fees paid by others when they join.
MLM refers to the way that the organizer or operator develops personnel to calculate and pay remuneration to the developed personnel based on their number of directly or indirectly developed personnel or sales performance, or require the developed personnel to obtain the qualification to join in on the condition of paying certain fees. Its purpose is to seek illegal interests, disrupt economic order and affect social stability
it is necessary to judge whether it belongs to MLM from the legal provisions and specific operation mode. At the same time, you can inquire about the company's situation on the national enterprise credit information network< According to Article 7 of the regulations on the prohibition of pyramid selling, the following acts belong to pyramid selling:
(1) organizers or business operators, through developing personnel, require other personnel developed by the developed personnel to join, and calculate and pay remuneration (including material rewards and other economic benefits, the same below) to the developed personnel based on the number of personnel developed directly or indirectly, Seeking illegal interests
(2) the organizer or business operator, through the developer, requires the developed person to pay fees or pay fees in disguised form by way of subscribing for commodities, so as to obtain the qualification of joining or developing other persons to join and seek illegal interests
(3) the organizer or business operator, through the development personnel, requests other personnel developed by the development personnel to join, forms the relationship between the upper and lower line, and calculates and pays the online remuneration based on the sales performance of the lower line, so as to seek illegal interests< The obvious characteristics of MLM are as follows:
1. The price of MLM goods deviates from the actual value of the goods. Some MLM goods have no use value and service items are fictitious
2. The income of participants does not come from the reasonable profits from selling procts or services, but from the fees paid by others when they join.
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