A 4.20-kg box has an acceleration of 2.10 m/s² when it is pulled by a horizontal force across a surface with Hk = 0.420. Find the work don over a distance of 9.0 cm by the horizontal force. Submit Answer Tries 0/10 Find the work done by the frictional force. Submit Answer Tries 0/10 Find the work done by the net force. Submit Answer Tries 0/10 What is the change in kinetic energy of the box?

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