Energy, work and power — practice question

A car with mass $880\,\text{kg}$ is moving on a level straight road, and its engine is delivering power at a steady rate of $P\,\text{W}$. The resistive force opposing the motion is $700\,\text{N}$. When the car’s speed is $16\,\text{m s}^{-1}$, its acceleration is $0.625\,\text{m s}^{-2}$.