A train 150 m long passes a pole in 10 seconds. What is its speed in km/h?
Q1. A train 150 m long passes a pole in 10 seconds. What is its speed in km/h?
Answer: 54 km/h
Explanation: Speed is 150 divided by 10, which is 15 m/s. Multiply by 18/5 to convert to km/h: 15 times 18/5 equals 54.