m=1.2*10^3 кг t=20 c v=10 м/с N=?
N=A/t A=m*v²/2 N=m*v²/(2*t)=1.2*10^3*10²/(2*20)=3*10^3 Вт
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m=1.2*10^3 кг t=20 c v=10 м/с N=?
N=A/t A=m*v²/2 N=m*v²/(2*t)=1.2*10^3*10²/(2*20)=3*10^3 Вт
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