1. Did he manage to save the firm by cutting staff?. (by improving distribution) ___________________________________________________________
2. Tom arrived late; do you think he had any problems with his bicycle chains? (with his bicycle brakes) ____________________________________________________________
3. Do you enjoy reading “Harry Potter” by J.K. Rowling? (“Lord of the Rings” by J.R.R.Tolkien) ___________________________________________________________
4. He looks awful. Do you think he’s suffering from a cold? (stomachache) ___________________________________________________________
5. Did you repair the washing machine? (Tara repaired it)
___________________________________________________________
6. Did her beauty impress you ?(her generosity impressed me)
___________________________________________________________
7. Were the jewels hidden on the roof of his house? (under the floor)
___________________________________________________________
8. Did the Second World War end on 3 May 1945? (7 May 1945)
___________________________________________________________
9. Do you like painting? (singing)
___________________________________________________________
10. Do you think we need all these words now? (we need actions)
___________________________________________________________
1 viên đạn bay theo phương ngang vs tốc độ 200m/s thì vỡ thành 2 mảnh có khối lượng m1=5kg , m2=10kg. mảnh nhỏ bay lên trên theo phương thẳng đứng vs tốc độ 346m/s. hỏi mảnh to bay theo phương nào, với tốc độ bao nhiêu. bỏ qua sức cản của không khí