lenka040670
19.05.2020 16:10

ТОЛЬКО ОТВЕТ , ЛЕГКО
Швидкість тіла масою 1 кг, кинутого вертикально вгору, змінюється за законом: υу = 30 − 5t.За нульовий рівень потенціальної енергії вважайте точку кидання. Встановіть значення потенціальної та кінетичної енергії через 2 с після початку руху.

Выберите один ответ:
Потенціальна енергія – 450 Дж
Кінетична енергія – 0 Дж

Потенціальна енергія – 500 Дж
Кінетична енергія – 50 Дж

Потенціальна енергія – 250 Дж
Кінетична енергія – 200 Дж

Потенціальна енергія – 312,5 Дж
Кінетична енергія – 127,5 Дж

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Ответ:
kulakovakatyus
30.09.2020 09:40

Have you ever thought, my dear eighth-graders, why people cannot live without books?

Every person needs different books. One person more, another less. But all people together, that is, humanity, need books. One person can live without books. Bad, boring, uninteresting. But maybe. But humanity is not.

You can not live without memory.

If people forget themselves, forget what they did ten, twenty, one hundred, one thousand years ago, life simply cannot move on.

All of humanity will choke, stagnate, repeat its own mistakes without end, unable to overcome them.

Books are a memory.

Not flawless, no. Sometimes this memory fails, it misses something, sometimes it deliberately deceives, because not all books are true. There are terrible failures in this memory, like a bullet wound in the human brain, like a stab in the back.

But the book memory, whatever it is, is the only memory of humanity.

And what do you think about this?

0,0(0 оценок)
Ответ:
Валерия1804
30.09.2020 09:40

Have you ever thought, my dear eighth-graders, why people cannot live without books?

Every person needs different books. One person more, another less. But all people together, that is, humanity, need books. One person can live without books. Bad, boring, uninteresting. But maybe. But humanity is not.

You can not live without memory.

If people forget themselves, forget what they did ten, twenty, one hundred, one thousand years ago, life simply cannot move on.

All of humanity will choke, stagnate, repeat its own mistakes without end, unable to overcome them.

Books are a memory.

Not flawless, no. Sometimes this memory fails, it misses something, sometimes it deliberately deceives, because not all books are true. There are terrible failures in this memory, like a bullet wound in the human brain, like a stab in the back.

But the book memory, whatever it is, is the only memory of humanity.

And what do you think about this?

0,0(0 оценок)
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