m*a=F-u*m*g u=(F-m*a)/m*g
a=2*S/t^2=2*500/60^2=0,28 м/с2 u=(180-100*0,28)/100*10=0,152
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m*a=F-u*m*g u=(F-m*a)/m*g
a=2*S/t^2=2*500/60^2=0,28 м/с2 u=(180-100*0,28)/100*10=0,152