Một ô tô khối lượng m đang chuyển động với vận tốc v thì tài xế tắt máy. Công của lực ma sát tác dụng lên xe làm xe dừng lại là

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the word that has the underlined part pronounced differently from the rest:

  theatre                        there                       anything                      three

• Choose the correct sentence which is built from the words and phrases given:

  I / busy / prepare / my English examination / next week.
  
  

• Choose a word that has different stress pattern:

  special                      mingle                      building                    among

• Choose the correct sentence which is built from the words and phrases given:

  the graph / amount of smoke / increase / in big cities.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  Smoke / cars / emit / identify / by 46%.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  method                      together                         both                      month

• Choose the correct sentence which is built from the words and phrases given:

  20% of the smoke / come/ burning garbage.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  locate                      area                       state                    place

• Choose the correct sentence which is built from the words and phrases given:

  sum up / cars / take the main responsibility / air pollution.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  suburb                     learn                      liberty                        birthday