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A 40 kg box initially at rest is pushed 5 m along a rough, horizontal floor with a constant applied
horizontal force of 130 N. If the coefficient of friction between the box and the floor is 0.3, find
the change in the kinetic energy of the box is:
4| a) 34 J
b) 27 J
c) 45 J
d) 62 J
e) -38 J

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