A constant frictional force acts on a moving object for a brief period, so the object's momentum decreases. Which expression is used to calculate the time during which the force acts?
- A$\text{time} = \dfrac{\text{change in momentum}}{\text{force}}$
- B$\text{time} = \text{change in momentum} \times \text{force}$
- C$\text{time} = \dfrac{\text{momentum}}{\text{force}}$
- D$\text{time} = \text{momentum} \times \text{force}$