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thanhhien7112003
2 năm trước
Lúc 8h sáng. Một người đi xe máy khởi hành từ A chuyển đội thảng đều với vận tốc 40km/h a. Viết phương trình chuyển động b. Sau khi chuyển động 30p. Người đó ở đâu? c. Người đó cách A 60km lúc mấy giờ ?
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