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

A person driving a car with the speed 72 kilometre per hour suddenly s

1.	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
Answer» The reaction TIME of the PERSON = 0.25 secondsExplanation:Speed of the car = 72 km/hr = 72 × 5/18 m/s = 20 m/sThe person applies the breaks after COVERING a distance of 5 mTherefore the time taken to COVER the 5 m distance will be his reaction timeTime taken = distance/speed = 5/20 = 0.25 secondsTherefore, the reaction time of the person = 0.25 seconds.Hope this is helpful.

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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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