V=V0-a*t a=Fтр/m=u*m*g/m=u*g V=0
V0=u*g*t u=V0/g*t=20/10*40=0,05
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V=V0-a*t a=Fтр/m=u*m*g/m=u*g V=0
V0=u*g*t u=V0/g*t=20/10*40=0,05