A police officer is waiting near an intersection. He sees a truck running a red light. The truck is traveling with a constant speed of 18.0 m/s. The police officer immediately starts to chase the truck. The police officer accelerates with a constant acceleration of 3.0 m/s^2, after which he maintains a constant speed until he catches up with the truck.
What is the final velocity of the police car after accelerating for 10s?