On Earth, the gravitational field strength is $9.8\,\text{N kg}^{-1}$. On Mars, the gravitational field strength is $3.7\,\text{N kg}^{-1}$. The difference between an object’s weight on Earth and the weight of that same object on Mars is $25\,\text{N}$. What is the mass of the object?
- A$1.9\,\text{kg}$
- B$2.6\,\text{kg}$
- C$4.1\,\text{kg}$
- D$6.8\,\text{kg}$