# Physics

posted by
**Emily** on
.

A police car is at rest beside a road, looking for speeders. A car passes going at a constant speed of 30.0 m/s. The police car starts up 4 seconds later and accelerates at 2 m/s sq. until it reaches a speed of 40m. If the police car maintains this speed until it catches up wit the speeding car, calculate the total distance in which he catches up with the speeder.