A bicycle is braked so that it experiences uniform deceleration from a speed of $8\,\text{m s}^{-1}$ to $6\,\text{m s}^{-1}$ across a distance of $7\,\text{m}$. If the bicycle’s deceleration stays constant, what additional distance will it cover before it comes to rest?
- A$7\,\text{m}$
- B$9\,\text{m}$
- C$16\,\text{m}$
- D$21\,\text{m}$