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Консультация № 196188
23.08.2019, 10:51
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Здравствуйте! У меня возникли сложности с таким вопросом:
Снаряд, выпущенный со скоростью v0 =100 м/с
под углом a= 60 градусов к горизонту, мгновенно взрывается через некоторое время после выстрела. Суммарный импульс всех осколков через 3cек. после взрыва направлен горизонтально. В этот момент все осколки находятся
в полете. Через какое время T после выстрела взорвался снаряд?
Силы сопротивления воздуха, действующие на снаряд и осколки, считайте пренебрежимо малыми.
Снаряд, выпущенный со скоростью v0 =100 м/с
под углом a= 60 градусов к горизонту, мгновенно взрывается через некоторое время после выстрела. Суммарный импульс всех осколков через 3cек. после взрыва направлен горизонтально. В этот момент все осколки находятся
в полете. Через какое время T после выстрела взорвался снаряд?
Силы сопротивления воздуха, действующие на снаряд и осколки, считайте пренебрежимо малыми.
Обсуждение
25.08.2019, 09:15
общий
это ответ
Здравствуйте, irinasoboleva76!
Пока все осколки находятся в полёте, центр масс системы осколков движется так же, как и целый снаряд. Импульс центра масс снаряда направлен горизонтально в высшей точке его траектории, которой снаряд достигает через время
Значит,
(с).
Литература
Аксенович Л. С., Ракина Н. Н., Фарино К. С. Физика в средней школе. -- Минск: Адукацыя i выхаванне, 2004. -- 720 с.
Пока все осколки находятся в полёте, центр масс системы осколков движется так же, как и целый снаряд. Импульс центра масс снаряда направлен горизонтально в высшей точке его траектории, которой снаряд достигает через время
Значит, (с).Литература
Аксенович Л. С., Ракина Н. Н., Фарино К. С. Физика в средней школе. -- Минск: Адукацыя i выхаванне, 2004. -- 720 с.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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