m*a=F-u*m*g u=(F-m*a)/m*g a=V/t=15/10=1,5 м/с2
u=(50000-20000*1,5)/20000*10=0,1
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m*a=F-u*m*g u=(F-m*a)/m*g a=V/t=15/10=1,5 м/с2
u=(50000-20000*1,5)/20000*10=0,1