An object of mass m = 20 kg is pushed with a force F = 40 N parallel rough horizontal surface with a coefficient of kinetic friction u_k=0.1 acceleration of the object is equal to: O 0.5 m/s^2 O 2.5 m/s^2 O 2 m/s^2 1m/s^2 O 1.5 m/s^2
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