-
Велосипедист начал подъем на холм со скоростью 36км/ч, а закончил со скоростью 18 км/ч. Сколько времени длился подъем и каким был модуль ускорения велосипедиста, если он преодолел при подъеме 75м?
Ответы 1
-
V=36км/ч= 10м/сV=18км/ч=5м/сVсредняя=v1+v2/2=10+5/2=7,5м/сS=vсредняя *tt=75м/7,5м/с=10са=Дельтаv/t=5/10=0.5м/с^2
-
Автор:
vincent89 - 5 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
Объясни почему в список Всемирного природного наследия включены вулканы на Камчатке и озеро Байкал
-
Предмет:
Окружающий мир -
Автор:
mango9 - 5 лет назад
-
Ответов:
0 -
Смотреть
-
-
ПОМОГИТЕ ПОЖАЛУЙСТО !!!!! 14 БАЛЛОВ ! МОЖНО ПРОЧИТАТЬ УСЛОВИЯ НАЧЕРТИТЬ У СЕБЯ В ЧЕРНОВИКЕ СФОТАТЬ И ПРИСЛАТЬ МНЕ ! ПОЖАЛУЙСТО !
-
Предмет:
Математика -
Автор:
dragonfllv - 5 лет назад
-
Ответов:
3 -
Смотреть
-
-
С какой системы счисления может существовать число 3210412.23
-
Предмет:
Информатика -
Автор:
gina - 5 лет назад
-
Ответов:
0 -
Смотреть
-
-
. I (to do) morning exercises.
2. He (to work) at a factory.
3. She (to sleep) after dinner.
4. We (to work) part-time.
5. They (to drink) tea every day.
6. Mike (to be) a student.
7. Helen (to have) a car.
8. You (to be) a good friend.
9. You (to be) good friends.
10. It (to be) difficult to remember everything.
Упражнение 2. Раскройте скобки, употребляя глаголы в Present Simple.
1. Alice (to have) a sister.
2. Her sister’s name (to be) Ann.
3. Ann (to be) a student.
4. She (to get) up at seven o'clock.
5. She (to go) to the institute in the morning.
6. Jane (to be) fond of sports.
7. She (to do) her morning exercises every day.
8. For breakfast she (to have) two eggs, a sandwich and a cup of tea.
9. After breakfast she (to go) to the institute.
10. Sometimes she (to take) a bus.
11. It (to take) her an hour and a half to do her homework.
12. She (to speak) English well.
13. Her friends usually (to call) her at about 8 o’clock.
14. Ann (to take) a shower before going to bed.
15. She (to go) to bed at 11 p. m.
Упражнение 3. Раскройте скобки, употребляя глаголы в Present Simple.
1. My working day (to begin) at six o'clock.
2. I (to get) up, (to switch) on the TV and (to brush) my teeth.
3. It (to take) me about twenty minutes.
4. I (to have) breakfast at seven o’clock.
5. I (to leave) home at half past seven.
6. I (to take) a bus to the institute.
7. It usually (to take) me about fifteen minutes to get there.
8. Classes (to begin) at eight.
9. We usually (to have) four classes a day.
10. I (to have) lunch at about 2 o’clock.
Упражнение 4. Используйте слова в скобках для образования предложений в Present Simple. Обратите внимание, в какой форме должно стоять предложение (утвердительной, вопросительной или отрицательной).
1) They _____ football at the institute. (to play)
2) She _____ emails. (not / to write)
3) ____ you____ English? (to speak)
4) My mother ____ fish. (not / to like)
5) ____ Ann ____ any friends? (to have)
6) His brother _____ in an office. (to work)
7) She ___ very fast. (cannot / to read)
8) ____ they ____ the flowers every 3 days? (to water)
9) His wife _____ a motorbike. (not / to ride)
10) ____ Elizabeth_____ coffee? (to drink)
Упражнение 5. Вставьте глагол “to be” в требуемой форме Present Simple.
1. I ... a student.
2. My father ... not a shop-assistant, he ... a scientist.
3. ... your aunt a nurse? - Yes, she ... .
4. ... they at home? - No, they ... not. They ... at school.
5. ... you an engineer? - Yes, I....
6. ... your friend a photographer? No, she ... not a photographer, she ... a student.
7. ... your brothers at school? - Yes, they ... .
8. ... this her watch? - Yes, it ... .
9. Max ... an office-worker.
10. We ... late, sorry!
Упражнение 6. Переведите на англий
ппжжжжжжж срочноооо-
Предмет:
Английский язык -
Автор:
rhiannahn7u - 5 лет назад
-
Ответов:
0 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35898 -
Askold
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
754
How much to ban the user?
1 hour
1 day
100 years