When a box of mass 45kg, is given an initial speed of 5ms^-1 it slides along a horizontal floor a distance of 3m before coming to a rest. what is the coefficient of kinetic friction between the box and the floor? (G = 10ms^-2)

A. \( \frac{5}{6} \)
B. \( \frac{5}{12} \)  
C. \( \frac{1}{3} \)
D. \( \frac{2}{3} \)

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Correct Answer: B