alleryএখন ৰে'লৰ গতিবেগ নিৰ্ণয় কৰক। I: ই 120 km দূৰত্ব অতিক্ৰম কৰে। II: ইয়াৰ 2 ঘণ্টা সময় লাগে।
Aকোনোটোৱেই নহয়, আনকি একেলগেও নহয়
Bদুয়োটা একেলগে প্ৰয়োজন
Cকেৱল I যথেষ্ট
Dকেৱল II যথেষ্ট
Answer & Solution
Correct answer: B. দুয়োটা একেলগে প্ৰয়োজন
গতিবেগ হৈছে দূৰত্বক সময়ৰে হৰণ কৰা, গতিকে 2 ঘণ্টাত 120 km-ৰ বাবে দুয়োটাৰে প্ৰয়োজন, যাৰ ফলত 60 km/h পোৱা যায়।
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