A person driving a car with the speed 72 kilometre per hour suddenly sees a boy crossing the road if the distance moved by car before the person applies break is fine metre reaction time of the person
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Answer:
The reaction time of the person = 0.25 seconds
Explanation:
Speed of the car = 72 km/hr = 72 × 5/18 m/s = 20 m/s
The person applies the breaks after covering a distance of 5 m
Therefore the time taken to cover the 5 m distance will be his reaction time
Time taken = distance/speed = 5/20 = 0.25 seconds
Therefore, the reaction time of the person = 0.25 seconds.
Hope this is helpful.
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