user-avatar
ngochoan21
2 năm trước
Trong một chuyển động rơi tự do của một vật không vận tốc ban đầu vận tốc trung bình của vật rơi trong giây cuối cùng lớn gấp đôi vận tốc trung bình của nó trong giây liền trước nó. Hỏi thời gian vật rơi đến mặt đất. Lấy g = 10 m/s2 . giúp mình với hihu
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines the pair of sentences given in each of the following questions. Question 46. I passed the test. My parents took me to the circus. A. I passed the test, so my parents took me to the circus. B. I passed the test, but my parents took me to the circus. C. Because I passed the test, so my parents took me to the circus. D. Although I passed the test, my parents took me to the circus. Question 47: Tom was shocked at what he heard. He couldn’t say a word. A. Tom couldn’t say a word although he was shocked. B. Tom was too shocked at what he heard to say a word. C. Tom who was so shocked at what he heard couldn’t say a word. D. Tom was such shocked at what he heard that couldn’t say a word. Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions. Question 48. Too tired to continue, David stopped walking. A. David couldn’t go on walking because he was too tired. B. David couldn’t stop walking because he was too tired. C. David was too tired to carry out walking. D. David can’t continue to walk when he’s tired. Question 49. He was last seen in 1928. A. He has not been able to see in 1928. B. No one has seen him since 1928. C. He didn’t see anyone in July 1928. D. No one saw him until July 1928. Question 50. She hasn’t seen her family for years. A. She didn’t see her family for a long time. B. It’s time she saw her family years ago. C. It’s years ago she has seen her family. D. It’s years since she last saw her family.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team