[Học Để Thi] New comment on Nguyệt Trúc - THPT Bà Điểm.

Trang Ánh Nam has left a new comment on your post "Nguyệt Trúc - THPT Bà Điểm":

Bài 4 trang 29: một vật đặt ở đỉnh mặt phẳng nghiêng có chiều dài l=100m, hệ số ma sát nghỉ 0,5. lấy g=10.
a) xác định góc của mặt phẳng nghiêng để vật nằm yên.
b)cho góc mặt phẳng nghiêng so với mặt phẳng ngang 30 độ. Xác định thời gian và vận tốc của vật khi xuống hết dốc.

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Posted by Trang Ánh Nam to Học Để Thi at December 7, 2018 at 10:27 PM

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