A 200 m long train is running at a speed of 100 km/h. In how much time will it pass a man standing near the railway line?

10.4 sec 9.2 sec 7.2 sec 6.4 sec

7.2 sec

Speed = 100 km/h 100 km/h = 100 × \(\frac{5}{18}\) m/sec =  \(\frac{500}{18}\) m/sec Distance to be covered is = 200 m Time taken =  \(\frac{200 × 18}{500}\) = 7.2 sec So , Time taken by train to cross a men is 7.2 sec