66th BPSC (Pre) 2020
A train 150 m long crosses a pole in 15 seconds. What is its speed?
a30 km/h
b36 km/h✓ Correct
c40 km/h
d45 km/h
Explanation
Speed = 150/15 = 10 m/s = 10 × 18/5 = 36 km/h.
speedtrain
Speed = 150/15 = 10 m/s = 10 × 18/5 = 36 km/h.