alleryএখন ৰে'লৰ দৈৰ্ঘ্য কিমান? I: ই 10 s-ত এটা খুঁটা পাৰ হয়। II: ইয়াৰ গতিবেগ 36 km/h।
Aকেৱল I-য়েই যথেষ্ট
Bকেৱল II-য়েই যথেষ্ট
Cআনকি একেলগেও কোনোটোৱেই নহয়
Dদুয়োটা একেলগে প্ৰয়োজন
Answer & Solution
Correct answer: D. দুয়োটা একেলগে প্ৰয়োজন
গতিবেগ 36 km/h হ'ল 10 m/s আৰু খুঁটাটো 10 s-ত পাৰ হয়, গতিকে দুয়োটা ব্যৱহাৰ কৰি দৈৰ্ঘ্য হ'ল 100 m।
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