Một chất điểm chuyển động thẳng biến đổi đều có đồ thị vận tốc thời gian: a) Xác định vận tốc ban đầu, gia tốc và tính chất chuyển động của vật. b) Viết phương trình vận tốc của vật. c) Tính quãng đường vật đi được trong 15 s đầu tiên.

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I. Viết lại câu với động từ wish. 1. I miss the cartoon on TV. => I wish 2. Lan cannot meet her friend. => She wishes.................................................................. 3. They don’t know how to speak Chinese. => They wish................................................................... 4. Their teams don’t play very well. => They wish................................................................... 5. She doesn’t get good marks. => She wishes.................................................................. 6. It’s cold. => I wish .......................................................................... 7. I live in a big city, and I don’t like it. => I wish .......................................................................... 8. I have to work tomorrow. => I wish .......................................................................... 9. There are many people here. => I wish .......................................................................... 10. Mary isn’t here. => I wish .......................................................................... II. Complete correct form of the verb shown in brackets. 1. I wish he ___________ here now. (be) 2. I wish that you _____________ here yesterday. (be) 3. We wish you ______________ tomorrow. (come) 4. You will wish you ______________ earlier. (leave) 5. They wished he _________________ with them the next day. (come) 6. We wish you ________________ here now (arrive) 7. I wish that he ______________ us next year. (visit) 8. She wishes that she ___________ at home now. (be) III. Choose the best answer to complete these following sentences. 1. I wish you ______ here with me. A. was B. were C. am D. have been 2. Lan wishes she ______ Maryam someday. A. visit B. visited C. would visit D. will visit 3. They wish they ______ a new car. A. have B. had C. would have D. has 4. He wishes he ______ the exam. A. passes B. pass C. passed D. will pass 5. He ______ to see a new film called “ Ghosts and Monsters” last night. A. goes B. went C. go D. has gone 6. What were you doing when he ______ at 4 yesterday? A. come B. had come C. came D. would come 7. Her parents ______ to Ha Noi last year. A. moved B. moves C. move D. had moved 8. Did you ______ her at the party last night? A. saw B. see C. seeing D. to see