A car accelerates from 0 km / h to 50 km / h in 9.00 seconds. The car has a mass of 1100 kg. As the car accelerates, the engine develops an average power of 57 kW. What percentage of the energy emitted by the engine during these seconds is used to increase the kinetic energy of the car? I need the answer with 3 decimals and I am very grateful for all help that I can get!