alleryএকটি বাইক দুটি সমান দূরত্ব 40 km/h এবং 60 km/h গতিতে অতিক্রম করে। উভয় দূরত্ব মিলিয়ে এর গড় গতিবেগ কত?
A50 km/h
B45 km/h
C48 km/h
D52 km/h
Answer & Solution
Correct answer: C. 48 km/h
সমান দূরত্বের ক্ষেত্রে গড় হল 2ab/(a+b) = 2 x 40 x 60 / 100 = 48 km/h।
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