Câu 1: Viết công thức tính công cơ học, công xuất

Câu 2: Một vật nặng rơi từ độ cao 3m xuống đất. Hỏi lực nào thực hiện công. Tính công của lực đó thực hiện được trong trường hợp nói trên.

V. Em hãy đặt câu cho phần in đậm

1. Minh brushes his teeth twice a day .

2. Simon is in a lot of pain now because he has a toothache.

3. I felt sick after eating that food.

4. Nga went to see the dentist last week .

5. Dr.Lai will check your teeth.

6. It took Dr.Phong 10 minutes to fill Van's tooth.

7. My brother is going to the hospital.

III. Find and correct the mistake.

1. There aren't much students in my class

2. My new school is more bigger than my old one

3. Nam lives at Tran Hung Dao street

4. How is Hoa unhappy? -Because she misses her parents and friends

5. Her date of birth is on twelve May

6. Hoa doesn't have some friends in Hanoi

7. We can get our books in recess

8. It takes me a day painting this house

9. I am never late at school

10. It's difficult training dogs

I. Put the verbs in correct form

1. Every body (wait)......for the president in the hall now.

2. Where is your mother?

-She (be)........in the sitting-room. She (read).........newspaper.

3. Look! That plane (fly)........toward the airport. It (land)............

4. We (see)............a movie tomorrow.............You (join)....?

5. He is busy at the moment. But he (come)...........to give you a helping hand as soon as he finishes his work.

6. Long (fall).............down the stairs this morning and (break)...........his leg.

II. Complete a preposition into each blank.

1. Viet lives.......his aunt and uncle.........83 Hoang Van Thu Street.

2. Her birthday is........October, 17th.

3. Our party will be.........ten o'clock to half past eleven........the morning.

4. I'll wait............you outside the stadium.

5. I received a letter............my mother yesterday.

6. There are plenly..........movie programs.

7. What's............VTV1 to night.

8. Next add a litte soy sauce.........the dish.