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thanhtrinh.votinh02
2 năm trước
một vật chuyển động nhanh dần đều với vận tốc ban đầu 360km/h sau thời gian 20s đạt vận tốc 72km/h . a) tính gia tốc của vật b) tính vận toc của vât sau 10s c) tinh quãng đương vật đi đc trong 20s d) tính thời gian để vật đi hết quãng đuong 1km/h e) tính quãng đường vật di được trong giay thứ năm
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