A 4 kg block is sliding down a vertical wall while being pushed by an external force as shown in the figure. What coefficient of kinetic friction would be required for the block to move down the wall at constant speed if the magnitude of the external force is 30 N? 4 kg F 30° 1.31

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: