A man notices a puff of smoke from a starting pistol and then hears the pistol fire $1.5\,\text{s}$ later. The sound and the smoke are produced at the same instant. The starting pistol is $450\,\text{m}$ from the man. What is the speed of sound calculated from this observation?
- A$150\,\text{m s}^{-1}$
- B$300\,\text{m s}^{-1}$
- C$330\,\text{m s}^{-1}$
- D$625\,\text{m s}^{-1}$