A train 180 m long passes a point in 12 s. Its speed is?
Show answer & explanation
Correct answer: B
Explanation
Length of the train = 180 meters
Time to cross a point = 12 seconds
Speed = Distance / Time
= 180 / 12
= 15 m/s
To convert to km/h:
15 × 18 / 5 = 54 km/h