Предмет: Физика, автор: Yfnfif2617

Автомобиль начал движение по прямому участку шоссе со скоростью v1=50кмч Чкркз время t =0.5 ч в том же направлении выехал другой автомобиль со скоростью v2=70 кмч Определите через какое время t2 второй автомобиль догонит первый и какое расстояние s2проедет до встречи.???

Ответы

Автор ответа: Грендоу

0

Средняя скорость 72 км в час. Нужно найти время в пути и разделить расстояние пройденное автомобилем на это время.
1) 1/ 3 : 60 + 2/3 : 80 = 1/72 - время в пути, сам путь равен 1, отсюда скорость равна 1: 1/72 = 72.

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