If a train traveling at a constant speed of 72 km/h crosses a 200-meter bridge in 20 seconds, what is the length of the train in meters?
Answer and explanation
Correct answer: A. 200 meters
- Step 1: Convert speed to m/s: . Step 2. Total distance traveled in 20 seconds = . Step 3. Total distance = train length + bridge length: . Answer: 200 meters. Why not the others: 180 and 220 represent arithmetic errors; 160 miscalculates conversion.
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