PH-39
Friction and air resistance
Physics · Secondary 3 · Medium · Friction and air resistance
A 2.0 kg box is pushed along a horizontal floor with a constant force of 12 N. The frictional force opposing the motion is 4.0 N. What is the acceleration of the box? (Take g = 10 m/s².)
- 0.67 m/s²
- 2.0 m/s²
- 4.0 m/s²
- 8.0 m/s²
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