A toy car moves round a vertical loop track. It is released from rest at a height of $58\text{ cm}$ above the bottom of the vertical loop. When the car is at the top of the vertical loop, its height is $32\text{ cm}$. Assume that no resistive forces act on the car. What is the speed of the car at the top of the vertical loop?
- A$0.87\,\text{m s}^{-1}$
- B$2.3\,\text{m s}^{-1}$
- C$2.5\,\text{m s}^{-1}$
- D$3.4\,\text{m s}^{-1}$