alleryবিবৃতি: গতিবেগ সমান দূরত্ব / সময়। একই দূরত্বের জন্য যদি সময় অর্ধেক করা হয়, তবে গতিবেগ:
Aঅর্ধেক হ্রাস পাবে
Bঅপরিবর্তিত থাকবে
Cকমে শূন্য হবে
Dদ্বিগুণ হবে
Answer & Solution
Correct answer: D. দ্বিগুণ হবে
Speed = Distance / (Time / 2) = 2 * (Distance / Time), যার অর্থ speed দ্বিগুণ হয়।
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