A ball is released in a vacuum from a point $4.0\,\text{m}$ above the surface of Mars. When the ball is at a height of $2.0\,\text{m}$, its acceleration is $3.8\,\text{m s}^{-2}$. What is the acceleration of the ball when it is $1.0\,\text{m}$ above the surface of Mars?
- A$1.9\,\text{m s}^{-2}$
- B$3.8\,\text{m s}^{-2}$
- C$5.7\,\text{m s}^{-2}$
- D$7.6\,\text{m s}^{-2}$