PH-1411
Friction and air resistance
Physics · Secondary 4 · Medium · Friction and air resistance
A 5.0 kg box is pulled along a rough horizontal floor by a horizontal force of 18 N. The box moves at a constant speed. What is the frictional force acting on the box?
- 0 N
- 5.0 N
- 13 N
- 18 N
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