PROBLEM NO. 3 The 25.35- N box is at rest on the horizontal surface when the constant force F = 6.25N is applied. Given the coefficient of kinetic friction between the box and the surface is uk = 0.21, determine how fast the box is moving when it has moved 2.26 m from its initial position, (a) By applying Newton's Second Law (b) By applying the principle of work and energy. F

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