An object slows from $25.0\,\text{m s}^{-1}$ to $5.0\,\text{m s}^{-1}$ over a time of $4.0\,\text{s}$. Its mass is $50\,\text{kg}$. Determine the resultant force acting on the object.
- A$0.63\,\text{N}$
- B$10\,\text{N}$
- C$250\,\text{N}$
- D$4000\,\text{N}$