alleryA 120 m రైలు 54 km/h వద్ద అదే విధంగా కదులుతున్న 180 m రైలును 60 sలో అధిగమించింది. రైలు వేగం తక్కువగా ఉందా?
A36 km/h
B30 km/h
C40 km/h
D45 km/h
Answer & Solution
Correct answer: A. 36 km/h
సాపేక్ష వేగం (120 + 180)/60 = 5 m/s;
నెమ్మదిగా రైలు 15 − 5 = 10 m/s = 36 km/h వద్ద నడుస్తుంది.
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