Friction calculation of missile collision

1. I won't be able to do it now. Will the seniors do it now

2. No, elastic force is the force proced by deformation, and friction force is the force proced by motion

3. No, the real reason for the elastic force is the force proced when the object returns to its original shape after elastic deformation
but the friction force is because there are always small unsmooth protrusions or depressions on the surface of the object, These protrusions and depressions will proce the phenomenon of "meshing" (protrusions of one contact surface fall into depressions of another contact surface), so the force to prevent the movement of objects is fundamentally different

the elastic force is only the cause of friction, and the friction force does not actually belong to elastic force

4. Tianjin disease prevention center is near Hedong District. It seems that there is No.2 sightseeing road 868 841 870. You can go to the middle ring of Hongxing Road and back up

5. Company website: http://www.digitalchina.com/

established in 2000, digital China Holdings Co., Ltd. was separated from the original Lenovo Group and listed on the main board of the stock exchange of Hong Kong in 2001 (Stock Code: 861 HK). The company is committed to providing first-class e-commerce infrastructure procts, solutions and services for Chinese customers, covering supply chain management services, value-added services and it services. Digital China has not only ranked first in the field of IT proct distribution for many years, but also the largest professional IT service provider in China. In finance, telecommunications, government, finance and taxation, ecation, medical and other instries to provide technical solutions.

6.

Bus route: No.69, the whole journey is about 19.6km

1. Walk about 270m from Hangzhou bus passenger transport center station to metro passenger transport center station

2. Take No.69, pass 21 stops, and reach the auto parts market station of Auto City

3. Walk about 430m to Hainachuan grand liquor in Hangzhou

7.

The overall trend of 000034 is downward, mainly on the lookout

8. 000034, digital China, from the beginning of 2019 to march of this year, this stock has increased by more than 200%, but the profits and main business income of the same period have not reached such a high increase, and they have only increased by less than 10%. Especially since the middle and late March, this stock has dropped from the high 33 to the present 24, which is relatively rare. From the perspective of technical analysis, There has been a high deviation from the top of the daily level. Therefore, this kind of stock must be cautious. It is suggested to take a good stop loss position to prevent greater losses

9.

bus route: 640, the whole journey is about 10.3km

1. Walk about 390 meters from Tianjin first central hospital to aerospace Beili station

2. Take 640, pass 19 stops, and reach Lidi Street Station

3. Walk about 190 meters to Tianjin disease prevention and control station

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