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Physics, 28.08.2021 14:00 melmar76

Tại A và B cách nhau 340 km. Lúc 7 giờ, một xe khởi hành từ A về B với vận tốc 40 km/h. Đến 8h, xe thứ 2 khởi hành từ B về A vận tốc 60 km/h.
a. Viết phương trình chuyển động của hai xe.
b. Lúc nào thì hai xe cách nhau 75 km?

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Tại A và B cách nhau 340 km. Lúc 7 giờ, một xe khởi hành từ A về B với vận tốc 40 km/h. Đến 8h, xe...

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