A force 450 N pushes on a 78.21 kg box at an angle of 50° from the horizontal. Starting from rest , the box achieves a velocity of 2.49 m/s in a time of 4.32 s.  Find the coefficient of kinetic friction between the box and the floor.

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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: