Предмет: Физика, автор: Ayder

Тело массой 2 кг движется с ускорением, изменяющимся по закону a = 5t - 10. Определить силу, действующую на тело через 5 с после начала действия, и скорость в конце пятой секунды.

Ответы

Автор ответа: Тигра

F=ma=2кг*(5*5с-10)=2*15=30Н

v=v0+at=15м/с2*5с=75м/с

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