When the police arrived, the thief_____ away.

A police party is moving in a jeep at a constant speed v. They saw a thief at a distance x on a motorcycle which is at rest. The moment the police saw the thief, the thief started at constant acceleration a. Which of the following relations is true if the police is able to catch the thief?

A thief starts his car from a point with an acceleration of 2m//s^(2) . The police chasing the thief arives at the point 10s later and continues to chase the thief with a uniform velocity of 40m/s I their car. In what time the police's car will overtake the thief car?