For a car, each tyre has $100\,\text{cm}^2$ of contact area with the ground. The car’s mass is $1600\,\text{kg}$. Its weight is shared equally by the four tyres. The gravitational field strength $g$ is $10\,\text{N kg}^{-1}$. What pressure is applied to the ground?
- A$4.0\,\text{N cm}^{-2}$
- B$16\,\text{N cm}^{-2}$
- C$40\,\text{N cm}^{-2}$
- D$160\,\text{N cm}^{-2}$