Question

A motor car moving at a speed of 72 km/h can not come to stop in less than 3 sec while for a truck this time interval is 5 sec. On a highway the car is moving behind truck with the same speed 72 km/h. The truck gives a signal that it is going to stop at an emergency. At what dis†an ce the car should be from the truck so that it does not collide with truck ? Human response time is 0.5 sec

Answer 1