A $20\,\text{N}$ force pushes an object of mass $5.0\,\text{kg}$ forwards. Another force also acts on the object. The object has a forward acceleration of $3.0\,\text{m s}^{-2}$. What are the magnitude and direction of the other force?
- A$5.0\,\text{N}$, backwards
- B$15\,\text{N}$, backwards
- C$15\,\text{N}$, forwards
- D$35\,\text{N}$, forwards