allery150 m দীর্ঘ একটি ট্রেন 10 সেকেন্ডে একটি বৈদ্যুতিক খুঁটি অতিক্রম করে। ট্রেনটির গতিবেগ নির্ণয় করুন:
A10 m/s
B12 m/s
C20 m/s
D15 m/s
Answer & Solution
Correct answer: D. 15 m/s
গতিবেগ = দৈর্ঘ্য / সময় = 150 m / 10 s = 15 m/s।
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