allery54 km/h গতিবেগে ধাবমান একটি 180 m দৈর্ঘ্যের ট্রেন একই অভিমুখে 18 km/h গতিবেগে দৌড়ানো একজন প্রাতঃভ্রমণকারীকে অতিক্রম করে। প্রাতঃভ্রমণকারীকে অতিক্রম করতে কত সময় লাগবে?
A15 seconds
B18 seconds
C12 seconds
D20 seconds
Answer & Solution
Correct answer: B. 18 seconds
আপেক্ষিক গতিবেগ 36 km/h = 10 m/s, এবং 180 / 10 = 18 seconds।
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