A car moves anticlockwise around a horizontal circular road with radius $12\,\text{m}$, as illustrated. It takes $4.0\,\text{s}$ for the car to go from position P to position Q. What is the magnitude of the car’s average velocity for the trip from P to Q?
- A$4.2\,\text{m s}^{-1}$
- B$4.7\,\text{m s}^{-1}$
- C$6.0\,\text{m s}^{-1}$
- D$14\,\text{m s}^{-1}$