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Консультация № 200592
07.04.2021, 16:45
0.00 руб.
1
1
1
Здравствуйте! Прошу помощи в следующем вопросе:
Частица начала свое движение из точки с радиусом-вектором со скоростью, которая зависит от времени по закону , где – постоянные величины, – единичные орты в декартовой системе координат. На какое расстояние от начала координат удалится частица в момент времени с, если с, А = 2 м/c, В = 3 м/c, С = 4 м.
а) 1,10 м; б) 2,10 м; в) 3,10 м; г) 4,10 м ; д) 5,10 м;
Частица начала свое движение из точки с радиусом-вектором со скоростью, которая зависит от времени по закону , где – постоянные величины, – единичные орты в декартовой системе координат. На какое расстояние от начала координат удалится частица в момент времени с, если с, А = 2 м/c, В = 3 м/c, С = 4 м.
а) 1,10 м; б) 2,10 м; в) 3,10 м; г) 4,10 м ; д) 5,10 м;
Прикрепленные файлы:
Обсуждение
07.04.2021, 19:20
общий
это ответ
Здравствуйте, Дмитрий!
Предлагаю Вам следующее решение задачи.
Дано:
-- радиус-вектор точки, из которой частица начала движение; 
-- закон изменения скорости от времени.
Определить:
-- расстояние от начала координат, на которое удалится частица в момент времени 
с.
Радиус-вектор частицы в произвольный момент времени
можно определить по формуле
что при имеющихся данных приводит к такому результату:
Тогда
(м).
Ответ:
м.
Предлагаю Вам следующее решение задачи.
Дано:
-- радиус-вектор точки, из которой частица начала движение; -- закон изменения скорости от времени.Определить:
-- расстояние от начала координат, на которое удалится частица в момент времени с.Решение
Радиус-вектор частицы в произвольный момент времени
можно определить по формулечто при имеющихся данных приводит к такому результату:
Тогда
(м).Ответ:
м.
5
Об авторе:
Facta loquuntur.
Facta loquuntur.
Форма ответа
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