An alpha-particle possesses $2.2 \times 10^{-13}\,\text{J}$ of kinetic energy. What is the speed of the alpha-particle?
- A$4.1 \times 10^{6}\,\text{m s}^{-1}$
- B$5.8 \times 10^{6}\,\text{m s}^{-1}$
- C$8.1 \times 10^{6}\,\text{m s}^{-1}$
- D$1.2 \times 10^{7}\,\text{m s}^{-1}$