allery180 మీ మరియు 220 మీ పొడవు గల రైళ్లు 54 మరియు 36 కిమీ/గం వద్ద ఎదురుగా కదులుతాయి. పూర్తిగా దాటడానికి సమయం?
A12 s
B20 s
C16 s
D25 s
Answer & Solution
Correct answer: C. 16 s
అవి 400 mని సాపేక్ష వేగంతో 90 km/h = 25 m/s, 16 సెకన్లు అవసరం.
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