Grade 12th passAIPMT
A person driving a car with a speed 72 km/hr, suddenly sees a boy crossing the road. If the distance moved by car, before the person applies brakes is 5 m, the reaction time of the person is1) 0.5 s2)0.15 s3) 10 s4) 0.25 sBy using equations of kinetmaics I am getting option 1 as answer but by applying distance = speed*time I am getting option 4 as answer.Option 4 is the answer but why we wont use equations of kinematics explain please?
