A train 120 meters long takes 6 seconds to cross a man. What is the speed of the train in km/h?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 72.
Speed formula:
Given: Distance = 120 meters, Time = 6 seconds
Speed = 120 ÷ 6 = 20 m/s
Convert to km/h: 1 m/s = 3.6 km/h
So, 20 × 3.6 = 72 km/h