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dunghop0913
2 năm trước
Hãy tìm hiểu và trả lời Em hãy thực hiện công việc sau: Một tên lửa khi vừa rời mặt đất (hình H4.8) có khối lượng 800 tấn và chịu tác dụng của hai lực: - Trọng lực → P có phương thẳng đứng hướng xuống, độ lớn P. - Lực đẩy → F của động cơ có phương thẳng đứng, hướng lên, độ lớn F gấp 1,5 lần trọng lượng P của tên lửa. Hãy tìm giá trị P, F vẽ lại tương tự hình H4.9 và biểu diễn trên các lực → P , → F theo một tỉ xích do em chọn.
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