allery5 ছেকেণ্ডত গতিবেগ স্থিৰভাৱে 20-ৰ পৰা 50 কিমি/ঘণ্টালৈ বৃদ্ধি পায়। প্ৰতি ছেকেণ্ডত বৃদ্ধি কিমান?
A4 কিমি/ঘণ্টা
B5 কিমি/ঘণ্টা
C6 কিমি/ঘণ্টা
D10 কিমি/ঘণ্টা
Answer & Solution
Correct answer: C. 6 কিমি/ঘণ্টা
5 ছেকেণ্ডত বৃদ্ধি হ'ল 30 কিমি/ঘণ্টা, সেয়েহে ঢাল হ'ল প্ৰতি ছেকেণ্ডত 6 কিমি/ঘণ্টা।
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