A car moves up a slope at a steady speed of $25\,\text{m s}^{-1}$. The engine-driven wheels provide a forward force of $3000\,\text{N}$. Air resistance and friction together produce a total opposing force of $2100\,\text{N}$. The component of the car's weight acting down the slope is $900\,\text{N}$. Determine the rate at which thermal energy is dissipated.
- Azero
- B$2.3 \times 10^4\,\text{W}$
- C$5.3 \times 10^4\,\text{W}$
- D$7.5 \times 10^4\,\text{W}$