allery120 m நீளமுள்ள ஒரு ரயில் ஒரு தந்தி கம்பத்தை 12 வினாடிகளில் கடக்கிறது. அதன் வேகம் என்ன?
A32 km/h
B30 km/h
C40 km/h
D36 km/h
Answer & Solution
Correct answer: D. 36 km/h
அது தனது சொந்த நீளத்தை 12 s-ல் கடக்கிறது, எனவே 120 / 12 = 10 m/s, இது 36 km/h ஆகும்.
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