user-avatar
kidchoi1412
2 năm trước
Một vật đang đi với vận tốc 18 km/h thì leo lên một cái dốc có góc nghiêng a=30 độ so với phương ngang.lấy g=10m/s^2 .tính đoạn đường mà vật đi thêm được trên mặt phẳng nghiêng trong 2 trường hợp: a, bỏ qua ma sát b, hệ số ma sát =0,1
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Hi Nick, My family and I arrived in Bunol, Spain yesterday. It‛s the town where La Tomatina is held on the last Wednesday of August every year. There are thousands of people here. Luckily, the weather has been wonderful. We stayed up late, but got up early this morning to attend the festival. We saw that some people had already placed the ham on top of the greasy pole. Yesterday was the most exciting day of my life! In the morning, many people tried to climb up the pole to get the ham. At 11 a.m. we saw a jet of water coming from the water cannons and the chaos began. Bags of tomatoes from trucks were thrown to the crowds, and we began throwing tomatoes at one another. We all had to wear goggles to protect our eyes. After one hour, we saw another jet of water and stopped throwing. The whole town square was red with rivers of tomato juice. Finally, we tried tomato Paella, a traditional Spanish rice dish. Together with local people and tourists, we enjoyed the good food and drinks. I‛m still tired, so bye for now. Carlos TRUE OR FALSE 1. La Tomatina is held on the last Wednesday of August. ……………….. 2. People bring their own tomatoes to the festival. ……………….. 3. People are covered in red tomato juice. ……………….. 4. Both local people and tourists can take part in the festival. ……………….. CHOOSE THE WORDS A, B, C OR D 1. Which of the following could replace the word “goggles” in line 10? A. mirror b. glass c. glasses d. a & b are correct 2. What is the main idea of the passage? A. World festival tours b. Various festivals around the world C. Festival dishes with tomatoes d. Spain’s tomato fight festival

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