A train 180 meters long is traveling at a uniform speed of . How many seconds will it take to completely pass an electric pole?
Answer and explanation
Correct answer: B.
- Step 1: Convert the speed from kilometers per hour to meters per second: .
- Step 2: To cross a stationary point-sized object (electric pole), the distance covered equals the length of the train (). Using .
Answer
.
Why not the others: '' assumes a higher speed; '' divides by ; '' divides by .
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