csateasy
A train 200 metres long is moving at the rate of 40 km/h. In how many seconds will it cross a man standing near the railway line?
- A.12
- B.15
- C.16
- D.18
▶ Answer & Explanation
Correct answer: D. 18
To cross a stationary man, the train needs to cover a distance equal to its own length. The speed of the train is 40 km/h, which needs to be converted to metres per second. 40 km/h is equivalent to (40 * 5/18) m/s. The time taken is then distance (200m) divided by speed.
Source: UPSC csat 2018