user-avatar
264704718197492
2 năm trước
Một người đi bộ đi đều trên đoạn đường đầu dài 3km với vận tốc 2m/s. Đoạn đường sau dài 1,95km mất 0,5 giờ. Vận tốc trung bình trên cả đoạn đường là ?
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Choose A, B, C or D to indicate the correct answer to each of the following questions. 1. Sunlight is converted _________ electricity by each solar cells in the panels. A. in B. with C. into D. to 2. Not many people went to see the film. _________ it received good reviews from critics. A. However, B. Although C. Despite D. Because 3. A jet pack doesn’t ______ up a lot of space. A. have B. bring C. take D. occur 8. At this time next Tuesday, the children _________ “Tom and Jerry” on TV. A. will watch B. will be watching C. will not be watching D. watch 9. He thinks elephants are _________ animals. A. fascinating B. fascinated C. fascinates D. fascinate 10. Lan ________ in Ha Noi when I was young, but now she doesn’t. A. be used to living B. used to live C. didn’t use to live D. get used to living 11. A new hydropower station ______ in the North of the country next year. A. was built B. were built C. will be built D. has been built 12. Energy can be ________ from wind, hydro and nuclear power. A. invested B. installed C. replaced D. generated 13. “Should I use public transport or a bike to reduce carbon dioxide?” – “____________” A. Of course. It helps to reduce your carbon footprint, you know. B. Why not? It will harm the environment. C. I won’t advise you to do so. D. How about taking your car?

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