Предмет: Физика, автор: 15Sorry15

Люди пожалуйста если можна в деталях,не знаю даже как розписывать
Два автомобілі рухаються на зустріч один одному,відносно дороги.Швидкість руху першого автомобіля дорівнює 72 км за год,другого 25 м за секунду.Визначте швидкість першого автомобіля відносно другого.

Спасибо,даю 25 балов (все что есть)♥

Ответы

Автор ответа: Dedagenn

3

Ответ:

первого 72км/ч=20м/с

Если ось принята вправо, и вектор скорости первого вправо +v1, второго влево -v2, то первого относительно второго v12=v1-v2= 20-(-25)=45м/с

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