A car moving at a speed of $28\,\text{m s}^{-1}$ leaves a motorway via an exit road. The far end of the exit road is $22\,\text{m}$ above the motorway. If gravity is the only force taken into account, what speed will the car have at the end of the exit road?
- A$7.3\,\text{m s}^{-1}$
- B$19\,\text{m s}^{-1}$
- C$21\,\text{m s}^{-1}$
- D$24\,\text{m s}^{-1}$