một viên đạn có khối lượng 2 kg đang bay thẳng đứng lên cao với vận tốc 200 m trên s thì nổ thành 2 mảnh mảnh thứ nhất có khối lượng 1,5 kg bay với vận tốc 200 m trên giây theo phương hợp với phương đứng góc 60 độ hỏi vận tốc mạnh thứ hai gần nhất với giá trị nào sau đây

Perhaps seek some professional ? it isn't very asking some children who are just trying to find out answers to homework.also, it seems professional would actually be good to you. obviously it isn't going to magically fix your depression, but it'll do something. drugs, smoking weed, it won't do much, especially if your husband is against it. if you do it he'll dislike it. but talk to him, try and get him to listen to you, and figure everything out together, okay? there's a website- maybe it can offer some ?

Get from the teacher they will you

Igot 56.55 as the anwer