user-avatar
locnguyenhuu02
2 năm trước
Một xe tải khối lượng 2,5 tấn, bắt đầu chuyển động nhanh dần đều sau khi đi được quãng đường 144 m thì vận tốc đạt được 12 m/s. Hệ số ma sát giữa xe và mặt đường là μ = 0,04. Tính công của các lực tác dụng lên xe trên quãng đường 144m đầu tiên. Lấy g = 10 m/s2
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

out of this world. It brings them coverage of America’s astronauts as the astronauts explore (21)_______ space. In addition to all these things, television brings its viewers a steady stream of programs that are (22)______ to entertain. In fact, TV provides many (23)_____ entertainment programs than any other kind. The programs include dramas, comedies, sports, and (24)______ pictures. 19. a. ways b. means c. ranges d. shows 20. a. at b. in c. for d. about 21. a. deep b. large c. outer d. open 22. a. happened b. designed c. composed d. guided 23. a. more b. even c. most d. hardly 24. a. lovely b. clear c. motion d. full Read the following passage, and then answer the questions There are two main kinds of sports: team sports and individual sports. Team sports are such sports as baseball, basketball and volleyball. Team sports require two separate teams. The teams play against each other. They compete against each other in order to get the best score. For example, in a football game, if team A scores 4 goals and team B scores 3 goals, team A wins the game. Team sports are sometime called competitive sports. 25. How many main kinds of sports are there in the world? 26. Can you name some team sports? 27. How many teams do team sports require? 28. Why do two separate teams compete against each other? 29. What are team sports sometimes called?

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