An object, starting from rest, is released from a height of $12.0\text{ m}$. Its gravitational potential energy decreases by $565\text{ J}$ as it drops to the ground. Frictional forces are negligible. What is its speed on impact with the ground?
- A$4.71\text{ m s}^{-1}$
- B$15.5\text{ m s}^{-1}$
- C$47.1\text{ m s}^{-1}$
- D$240\text{ m s}^{-1}$