Physics, 14.06.2021 08:00 rabion8789

một vật khối lượng 1kg trượt không vận tốc đầu từ đỉnh một mặt phẳng nghiêng dài 10m nghiêng góc 30⁰ so với phương ngang.( g=10m/s²) a. tính cơ năng của vật. b. vận tốc của vật tại chân mặt phẳng nghiêng. bỏ qua ma sát. c. nếu hệ số ma sát là 0,1 .tính vận tốc tại chân mặt phẳng nghiêng.

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một vật khối lượng 1kg trượt không vận tốc đầu từ đỉnh một mặt phẳng nghiêng dài 10m nghiêng góc 30⁰...

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