A box of weight 40 N is pushed with a horizontal force of 20 N along level ground for a distance of 2.4 m.
The box is then lifted at constant velocity through a height of 1.6 m by a vertical force. What is the total work done on the box by the two forces?
1 )
80 J
110 J
3 )
120 J
4 )
160 J
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