Предмет: Физика, автор: kompui

Два тела массами m1 = 3,0 кг и m2 = 1,0 кг имеют одинаковые скорости. Отношения их кинетических энергий K1/K2(это не разделить, это дробь) равно;

1) 1/3 2) 1 3) 3 4)9

Ответы

Автор ответа: pyhteeva99

0

Нет ничего легче этой задачи.
Ек=mV^2/2
Делим Eк1/Ек2 = (m1V^2/2)/(m2V2^2/2)
Скорости одинаковые, поэтому они сокращаются, двойки тоже сокращаются ---> 3/1 = 3

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