Ответ:
№4
A=F*S
N=A/t
N=FS/t
F=Nt/S
F=1.2*2*60*1000/12=12 кН
№5
N=mg*V
V=N/mg
V=12*10^6/40=300000 м/с
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Ответ:
№4
A=F*S
N=A/t
N=FS/t
F=Nt/S
F=1.2*2*60*1000/12=12 кН
№5
N=mg*V
V=N/mg
V=12*10^6/40=300000 м/с