IOM 2019, Блиц — Задача 79

OLYMPIAD OF METROPOLISES, Moscow, September 2, 2019 · 2 септември 2019 г.

Условие

Trolley 1 with a mass of $m_1 = 2$ kg moves along the smooth horizontal track at a velocity $v_1$. Trolley 1 elastically collides with trolley 2 that was at rest on the track. The diagram describes the force ($F$) exerted on trolley 2 during the collision as a function of time. After the collision trolley 2 moves at a velocity of 1.25 m/s. Calculate the mass of trolley 2.

Решение

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Оригинал в Архива: blitz-en-all-task-final.pdf