с "зависшего" на высоте 1 км над землей вертолета сбросили груз. Через сколько секунд груз окажется на высоте 20 м" - №3986045

с "зависшего" на высоте 1 км над землей вертолета сбросили груз. Через сколько секунд груз окажется на высоте 20 м"
- Предмет:
  Физика
- Автор:
  dontekbig
- 5 лет назад

Ответы 1

ускор.своб.падения=9,8м/с1км=1000м1000-20=980м980/9,8=100с
- Автор:
  hobbesmreu
- 2 года назад
- 5
Добавить свой ответ

Еще вопросы

Задание по этому тексту:
One day Petey, who was a puppy, said to his mother, who was a dog:" I'd like a boy for Cristmas".
His mother said she thought he could have a boy if he was a very good puppy.
So the day before Christmas Petey's mother asked: " have your been a very good puppy?"
" Oh, yes!" said Petey. "I didn't frighten the cat."
"you didn't?" asked Petey's mother.
"Well,I just frightened her a little," said Petey. " And I didn't chew any shoes."
" Not any?" said his mother.
"Just a teeny-weeny chew", said petey. " And I remembered - well you have been a good little dog. I will go out and get your a boy for Christmas".
But when Petey's mother came back she looked very worried. "How world you like a soft white rabbit with pink ears for Cristmas?" she said to Petey.
"No, thanks," said Petey.
"Don't you want a lovely canary?"
"I'd like a boy," said Petey.
"How adout some little fish?" said Petey's mother.
" i just want a boy," said Petey.
"Petey," said his mother at last,"there are no boys to be found."
"No bous?" cried Petey.
"Not one could I find. They're terribly short of boys this year".
Peter thought he couldn't stand it if he didn't have a boy.
Finally his mother said:"There now, there must be a boy somewhere.
I fhink you ould find some dog who would give his boy away".
"Do you think I could?" asked Petey.
"You can try, can't you?" said his mother.
Вот сам вопрос
Say whether the following sentences are true or false.Correct the false sentences
1)Petey almost always barked when he wanted to chew shoes
2)Petey was a bad puppy becouse he didnt frighten the cat
3)Petey wanted a white rabbit or a lovely canary for Christmas
4)His mother found a nice litlle boy for Petey

Помогите пожалуйста,срочно надо
- Предмет:
  Английский язык
- Автор:
  baldomerohoward
- 5 лет назад
- Ответов:
  
  1
- Смотреть
составить звуковую модель слова футляр
- Предмет:
  Русский язык
- Автор:
  ashton912
- 5 лет назад
- Ответов:
  
  1
- Смотреть
докажите,что гринёв-романтический герой.
- Предмет:
  Литература
- Автор:
  zionmunoz
- 5 лет назад
- Ответов:
  
  1
- Смотреть
Для плетения восьми одинаковых корзин нужно 5808 метров проволоки. Сколько таких корзин получится из 8712 метров проволоки? Сколько метров проволоки понадобится, чтобы сплести 6 таких же корзин?
- Предмет:
  Математика
- Автор:
  sissyzhang
- 5 лет назад
- Ответов:
  
  0
- Смотреть

How much to ban the user?

1 hour 1 day 100 years