A $2.0\,\text{kg}$ box is dragged along the floor by a $6.0\,\text{N}$ force. The frictional force on the box is $1.0\,\text{N}$. What is the box's acceleration?
- A$0.40\,\text{m s}^{-2}$
- B$2.5\,\text{m s}^{-2}$
- C$3.0\,\text{m s}^{-2}$
- D$3.5\,\text{m s}^{-2}$