Предмет: Физика, автор: Nikomuro

Тепловоз, двигаясь равноускоренно из состояния покоя с ускорением 0,1 м/с2, увеличивает скорость до 18 км/ч. За какое время эта скорость достигнута? Какой путь за это время пройден? 

Ответы

Автор ответа: mitya09
0
Переведем скорость в систему СИ - 18:3.6=5м/с. Теперь воспользуемся формулой ускорения a=V-V0/t. Из неё получим время t= V-V0/a => t=5/0.1= 50 секунд. А теперь самое интересное найдем путь который прошел тепловоз. 
X=X0+V0t+at^2/2 X=0+0+ 0.1*50^2/2 = 125 метров. Problem?
Автор ответа: mitya09
0
ЛОЛ!!!
Автор ответа: mitya09
0
Да без проблем, обращайтесь.
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