A speeder in an automobile passes a stationary policeman who is hiding behind a
Channel: Doubtnut
Date: 2020-08-23

A speeder in an automobile passes a stationary policeman who is hiding behind a bil board with a motorcycle. After a `2.0` sec delay (reaction timwe) the policeman accelerates to his maximum speed of `150km//hr` in `12 sec` and catches the speeder `1.5km` beyond the billboard. find the speed of speeder in `km//hr`.