alleryA 120 m ട്രെയിൻ 54 km/h വേഗത്തിലുള്ള ട്രെയിൻ 180 m ട്രെയിനിനെ മറികടക്കുന്നു, 60 s-ൽ. ട്രെയിനിൻ്റെ വേഗത കുറവാണോ?
A36 km/h
B30 km/h
C40 km/h
D45 km/h
Answer & Solution
Correct answer: A. 36 km/h
ആപേക്ഷിക വേഗത (120 + 180)/60 = 5 m/s;
വേഗത കുറഞ്ഞ ട്രെയിൻ 15 − 5 = 10 m/s = 36 km/h-ൽ ഓടുന്നു.
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