The average time taken by a normal person to react to an emergency is one fifteenth of a second and is called the ‘reaction time’. If a bus is moving with a velocity of 60 km/h and its driver sees a child running across the road, how much distance would the bus had moved before he could press the brakes ? The reaction time of the people increases when they are intoxicated. How much distance had the bus moved if the reaction time of the driver were ½ s under the influence of alcohol?
Given,
Velocity of the moving bus = 60 km/hr
Distance ravelled by the bus before brakes are applied = ?
During the time of reaction, the velocity remains constant. 
When the driver is under the influence of alcohol, 
Distance moved before brakes are pressed,
That is the bus will be travel a lesser distance when the driver is under the influence of alcohol.
