Ac=m*V^2/2-m*g*h=m*(V^2/2 -g*h)=5*(10^2/2 -10*10)=-250 Дж
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Ac=m*V^2/2-m*g*h=m*(V^2/2 -g*h)=5*(10^2/2 -10*10)=-250 Дж