Предмет: Физика, автор: Zasrankaaa

Мальчик массой 30 кг,бегущий со скоростью 2 м/с, вскакивает на неподвижно стоящую платформу массой 10 кг. С какой скоростью начнет двигаться платформа с мальчиком?

Ответы

Автор ответа: fenix454

m*v=(m+M)*u

u=(m*v)/(m+M)=(30*2)/(30+10)=1,5 м/с

Ответ: 1,5 м/с

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