F=m*a S=(V^2-V0^2)/2*a a=(V^2-V0^2)/2*S=(15^2-5^2)/2*400=0,25 м/с F=10*10^3*0,25=2,5*10^3 H=2,5 кН
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F=m*a S=(V^2-V0^2)/2*a a=(V^2-V0^2)/2*S=(15^2-5^2)/2*400=0,25 м/с F=10*10^3*0,25=2,5*10^3 H=2,5 кН