Multiple choice

A train running at 60 km/hr crosses a man, who is running parallel to the track, in 7 seconds. What is the length of the train?

  1. 106.67 m

  2. 116.67 m

  3. 100 m

  4. Cannot be determined

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The relative speed of the train with respect to the man is unknown because the man's speed is not provided. Therefore, the length of the train cannot be determined.

AI explanation

To determine the length of the train, we must multiply its speed by the time it takes to pass the man. The formula requires the relative speed between the train and the man, which is found by subtracting the man's speed from the train's speed. Since the man's running speed is not provided in the problem, the relative speed cannot be calculated. Without the relative speed, the length of the train cannot be determined.

Keep practicing — related questions