F - m*g*sinα - k*m*g*cosα=m*a
a=F/m - g*(sinα + k*cosα)=20/2 - 10*(0.5 + 0.3*0.87)≈2.4 м/с²
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F - m*g*sinα - k*m*g*cosα=m*a
a=F/m - g*(sinα + k*cosα)=20/2 - 10*(0.5 + 0.3*0.87)≈2.4 м/с²
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