allery200 মিটাৰ দৌৰত A এ Bক 20 মিটাৰ পৰাস্ত কৰে। A 10 মিটাৰ প্ৰতি ছেকেণ্ডত দৌৰে। B ৰ গতি কিমান?
A8 m/s
B9 m/s
C8.5 m/s
D9.5 m/s
Answer & Solution
Correct answer: B. 9 m/s
A 20 ছেকেণ্ডত শেষ হয়, যাৰ সময়ত B 180 m সামৰি লয়, যাৰ ফলত 9 m/s পোৱা যায়।
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