Multiple choice

How many seconds will a 500 metres long train take to cross a man walking with a speed of 3 km/hr. in the direction of the moving train if the speed of the train is 63 km/hr.?

  1. 25

  2. 30

  3. 40

  4. 45

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Since the train and the man move in the same direction, relative speed = 63 - 3 = 60 km/hr. Converting to m/s: 60 × (5/18) = 50/3 m/s. Time = Distance/Relative Speed = 500/(50/3) = 30 seconds.