A train 100 m long runs at 90 km/h. How many seconds does it take to cross a pole?
Answer and explanation
Correct answer: A. 4 seconds
- Step 1: Speed = 90 x 5/18 = 25 m/s.
- Step 2: Time = distance / speed = 100 / 25 = 4 s.
Answer
4 seconds.
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