A group of nine dogs can drag a sledge with a total force of $800\,\text{N}$ at a speed of $1.5\,\text{m s}^{-1}$ for $360$ minutes. What is the mean work done by each dog over this period?
- A$4.8 \times 10^4\,\text{J}$
- B$4.3 \times 10^5\,\text{J}$
- C$2.9 \times 10^6\,\text{J}$
- D$2.6 \times 10^7\,\text{J}$