Предмет: Физика, автор: verrrla

При уменьшении массы тела в 2 раза и увеличения скорости движения в 4 раза его кинетическая энергия увеличится

Выберите ответ
1. в 2 раза
2. в 8 раз
3. в 16 раз
4. в 4 раза.

Ответы

Автор ответа: ap62ap26
1

его кинетическая энергия увеличится в 8 раз.

Автор ответа: sashulya1403
0

Ответ: увеличиться в четыре раза (4)

Объяснение:

Кинетическая энергия тела рассчитывается по формуле:

E = \frac{m*v^2}{2}

1) Уменьшаем массу тела в два раза:

E = \frac{m*v^2}{4}

2) Увеличиваем скорость движения в 4 раза:

E = \frac{m * (4v)^2}{4} = \frac{m*16v^2}{4} = 4mv^2

Следовательно, кинетическая энергия увеличиться в четыре раза.

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