Предмет: Физика, автор: dg80

зависимость пройденного телом пути S от времени t даётся уравнением S=A+Bt+Ct^2, где A=3м,B=2м\с, C=1м\с^2. Найти среднюю скорость и среднее ускорение тела за третью секунду движения

Ответы

Автор ответа: Mayra2000

Это же легкая задача, ответ вот такой
V=S/t(средняя скорость)
V=(поставим цифры)=3+2*3+1*9/3=6 м/с
теперь среднее ускорение
a=v/t= 6/3=2 м/с^2

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