Человека можно считать материальной точкой если..

если он не совершает движения

 

Закон сохранения импульса нужно применить. импульс ядра до распада = импульс ядра после распада + импульс частицы. если скорость ядра после распада равна u, масса ядра до распада равна m, масса частицы (непонятно, что за частица, там стоял знак альфа или бета? ) b, то тогда m v = (m-b) u + b v' тогда u = (m v - b v')/(m-b) скорость частицы относительно ядра: по закону сложения скоростей v'' = v'-u = v'-(m v - b v')/(m-b)=(m v' - b v' - m v + b v')/(m-b) = m(v'-v)/(m-b) если считать, что там бета-частица, то можно пренебречь b по сравнению с m, тогда v''=v'-v. отрицательный знак показывает, что скорость частицы относительно ядра направлена против движения ядра.

Abdilda Tazhibayev was born in 1909 in Akmeshit (now Kyzylorda). Medium

one hundred

The Kipchak tribe Tory clan is descended from Bessary's grandfather. [1] [2] His father, Tazhibai, died in 1915 and was left in the care of his mother, Aimankul. Due to his condition, six-year-old Abdilda was taken to a suburb of Karaozek. Then the future poet lived until the age of thirteen with his mother Aimankul and uncle Daldabay

grows in upbringing. Young Abdilda's poems and literature

His mother and aunt also aroused his curiosity

will be the grandfather. Aimankul is fluent in Arabic and Persian

He was literate, open-minded, and cheerful.

He writes letters to Abdilda and teaches her literature. Abdilda's mother Aimankul, who later became a well-known folk poet and published a collection of poems, at the request of his father Daldabay, recited to the villagers the stories of the East and various Kazakh poems. Passionate, silent, silent

One of his listeners was Abdil. Later, in a small group, Abdilda would recite the stories and epics to his guests and villagers.