Предмет: Физика, автор: Mimiminika

Сила 4 Н действует на тело массой 2 кг и сообщает ему ускорение, равное а. При воздействии на тело массой 4 кг эта же сила сообщит телу ускорение, равное...
1) $\frac{a}{2}$
2) a
3) 2a
4)3a

С решением, пожалуйста...

Ответы

Автор ответа: h9h

4

F=ma (2 закон Ньютона);

a=F/m.

a1=F/m1=4/2=2 м/c2

a2=F/m2=4/4=1 м/с2

Правильный ответ 1)а/2

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Геометрия, автор: suslik1927

Помогите срочно хелп

5 лет назад

Предмет: Английский язык, автор: Zzhanik

Fill in the gaps with the correct tense.

1. We _____ coffee when the phone rang. (to drink)
2. When they arrived at the station, the train_____ already_____. They had to wait for the next train. (to leave)
3.She_____ at this school for over 15 years. She is still teaching here. (to teach)
4. _____ you_____ Kate? I don't know where she is. (to see)
5. - “What_____ you_____ now?” (to watch)
- “A TV show.”
- “How long_____ you_____ it?” (to watch)
- “I_____ for an hour.” (to watch)
6. Matthew_____ as a journalist for 10 years by the next month. (to work)
7. Last night he had finished the book which he_____ for 2 years. (to write)
8. Sorry, I won't come to the party. I_____ for my exam for the whole evening. (to prepare)
9. By the end of July, students_____ all their exam. They will finally have time to rest. (to pass)
10. Emma usually_____ to the gym twice a week. (to go)

For each sentence, write in a preposition.

1. When I was younger, I was always so afraid ____ going to the dentist's.
2. Your mother is looking forward____going on that trip to Australia, isn't she?
3. The police were not convinced____ the man's honesty and charged him.
4. I would rather go to the disco____ stay here at home.
5. I'm not surprised he took that job. He has always been so keen____ computers.
6. But I am surprised____ how much money they want to pay him!
7. Mary isn't quite ready yet. She is in the kitchen looking____ her car keys.
8. Instead____ sitting here complaining about having nothing to do, go and do something constructive!
9. I don't have as much confidence in myself ____ you seem to.
10. Are you really happy____ the life you have here in San Francisco, Jane?
11. In some Mediterranean cultures, respect____ your elders is the most important part of family life.
12. Tell me____ the new job you started today.
13. I'm very interested____ wildlife documentaries on TV.
14. Do you always travel about the town____ car?

5 лет назад

Предмет: Русский язык, автор: falseyytrr

расписные,разберите слово как часть речи

5 лет назад

Предмет: Алгебра, автор: Тёма11222

Решите систему уравнение

8 лет назад

Предмет: Биология, автор: dinusja14

ПОМОГИТЕ ПОЖАЛУЙСТА

8 лет назад