A train 150 m long crosses a pole in 15 s. Speed in km/h?
Q1. A train 150 m long crosses a pole in 15 s. Speed in km/h?
Answer: 36
Explanation: Speed = 150/15 = 10 m/s = 10×3.6 = 36 km/h. Work each step carefully; ISSB math rewards accuracy under time pressure.