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2 năm trước
Ngựa kéo xe chuyển động đều trên đọan đừơng dài 1500m với vận tốc 2,5m/s . Lực ngựa kéo xe là 40N. Tính công suất ngựa sinh ra? Giúp với ạ.
Thích Trả lời Chia sẻ

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