PH-860
Work done
Physics · Secondary 3 · Medium · Work done
A 4.0 N force is used to push a box at constant speed across a horizontal floor. The frictional force on the box is 4.0 N. What is the work done against friction when the box moves 3.0 m?
- 12 J
- 1.3 J
- 7.0 J
- 24 J
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