a person driving the car with a speed of 72km/hr suddenly sees a boy crossing the road. If thecdistance moved by thecar, before the person applies the brakes is 5m the reaction time of the person is?
Elp experts
Let t be the reaction time and a be the acceleration of car
Initial speed of the car (u) = 72 km/h = 20 m/s
Final speed (v) =0
Distance covered (s) = 5 m
Initial speed of the car (u) = 72 km/h = 20 m/s
Final speed (v) =0
Distance covered (s) = 5 m