Question

A train 120 metres long crosses a pole in 6 seconds. What is the speed of the train in km/h?

• A. 60 km/h
• B. 72 km/h
• C. 80 km/h
• D. 90 km/h

Hint:

Distance to cross a pole equals the train's own length.

Answer 1

The Correct Option is B

Speed $= 20$ m/s. Since $1$ m/s $= 3.6$ km/h, we get $20 \times 3.6 = 72$ km/h.