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Консультация № 196430
22.09.2019, 10:11
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Уважаемые эксперты! Пожалуйста, ответьте на вопрос:
Частица движется так, что ее радиус-вектор изменяется по
закону: r(t)= 7i+ 4tj +3t^2k (м). По какому закону изменяется вектор скорости V и вектор ускорения a частицы? Найти модуль вектора скорости V в момент времени t = З с и перемещение тела ∆r за первые 4с
движения.
Заранее спасибо!
Частица движется так, что ее радиус-вектор изменяется по
закону: r(t)= 7i+ 4tj +3t^2k (м). По какому закону изменяется вектор скорости V и вектор ускорения a частицы? Найти модуль вектора скорости V в момент времени t = З с и перемещение тела ∆r за первые 4с
движения.
Заранее спасибо!
Обсуждение
23.09.2019, 11:46
общий
это ответ
Здравствуйте, kotrokot!
-- закон изменения скорости частицы [1, с. 12], [2, с. 151];
-- закон изменения ускорения частицы [1, с. 15], [2, c. 151];
(м/с)
-- модуль вектора скорости частицы в момент времени
с [1, с. 12];
(м)
-- модуль перемещения тела за первые четыре секунды движения [1, с. 7].
Литература
1. Яворский Б. М., Детлаф А. А., Лебедев А. К. Справочник по физике для инженеров и студентов вузов. -- М.: ООО "Издательство Оникс", 2007. -- 1056 с.
2. Письменный Д. Т. Конспект лекций по высшей математике. В 2 ч. ч. 1. -- М.: Айрис-пресс, 2007. -- 288 с.
-- закон изменения скорости частицы [1, с. 12], [2, с. 151];
-- закон изменения ускорения частицы [1, с. 15], [2, c. 151];
(м/с)-- модуль вектора скорости частицы в момент времени
с [1, с. 12]; (м)-- модуль перемещения тела за первые четыре секунды движения [1, с. 7].
Литература
1. Яворский Б. М., Детлаф А. А., Лебедев А. К. Справочник по физике для инженеров и студентов вузов. -- М.: ООО "Издательство Оникс", 2007. -- 1056 с.
2. Письменный Д. Т. Конспект лекций по высшей математике. В 2 ч. ч. 1. -- М.: Айрис-пресс, 2007. -- 288 с.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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