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quan1510
2 năm trước
ài 2: Một xe tải khối lượng 2 tấn, bắt đầu chuyển động nhanh dần đều sau khi đi được quãng đường 144m thì vận tốc đạt được 12m/s. Hệ số ma sát giữa xe và mặt đường là μ = 0,05. Tính công của các lực tác dụng lên xe trên quãng đường 144m đầu tiên. Lấy g = 10m/s2.
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