Предмет: Физика, автор: osipovdanill66

Пешехода идущего со скоростью 3,6 км ч догоняет велосипедист двигающийся в том же направлении со скоростью 20 км ч каковы их относительное скорости

Ответы

Автор ответа: yfchjkk
0

Ответ:

5 метров секунду.

3.6 км в час ==1метр в сек.

Относительная скорость при попутном движении равна разности между скоростями. Откуда относительная скорость искомая равна 6минус 1 равно 5 метров сек. Она же 5*3,6==18 км в час.

Автор ответа: schetinkov2563
0

Ответ:

16,4 км/ч

Объяснение:

Вычитаем из скорости одного рассматриваемого тела скорость другого рассматриваемого тела и получаем их относительную скорость.

Скорость велосипедиста относительно пешехода будет такой же, какой и скорость пешехода относительно велосипедиста.

Только если выбрать систему отсчета, связанной с велосипедистом, проекция скорости пешехода будет отрицательной

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