alleryএজন আৰোহীয়ে সময়ৰ প্ৰথম অৰ্ধাংশত 40 km/h আৰু দ্বিতীয় অৰ্ধাংশত 60 km/h গতি ব্যৱহাৰ কৰে। গড় দ্ৰুতি কিমান?
A48 km/h
B50 km/h
C54 km/h
D52 km/h
Answer & Solution
Correct answer: B. 50 km/h
সমান সময়ৰ ক্ষেত্ৰত গড় দ্ৰুতি হ'ল সৰল মাধ্য, (40 + 60) / 2 = 50 km/h।
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