(i)[4]
Calculate the value of $P$.
(ii)[3]
Find the steady speed at which the car is able to travel.
Mathematics 9709 · AS & A Level · Energy, work and power
Energy, work and power — practice question
A car with mass $1000\,\text{kg}$ is moving along a straight horizontal road. Its engine delivers constant power $P\,\text{kW}$. The resistive force on the car is $600\,\text{N}$. When the car’s speed is $25\,\text{m s}^{-1}$, its acceleration is $0.2\,\text{m s}^{-2}$.