Dưới tác dụng của một lực 2500N, một chiếc xe chuyển động đều lên dốc với vận tốc 6m/s trong 20/3 phút.
a) Tính quãng đường và công thực hiện được khi xe đi từ chân dốc lên đỉnh dốc.
b) Tính công suất của động cơ trong trường hợp trên.
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