Two train, each 700 meters long, are moving in opposite directions at speeds of 45 km/h and 55 km/h. How long will it take for the train to completely pass each other?
Two train, each 700 meters long, are moving in opposite directions at speeds of 45 km/h and 55 km/h. How long will it take for the train to completely pass each other?
दो रेलगाड़ियाँ, जिनमें से प्रत्येक 700 मीटर लंबी है, 45 किमी/घंटे और 55 किमी/घंटे की गति से विपरीत दिशाओं में चल रही हैं। रेलगाड़ियों को एक -दूसरे को पूरी तरह से पार करने में कितना समय लगेगा?
Detailed Solution & Logic
Correct Answer:
50 seconds
Time = समय
distance = दूरी
total distance / कुल दूरी = 700 + 700 = 1400 m
सापेक्ष गति / relative speed = 45 +55 = 100 km/h
=$ 100 \times \frac{15}{18} =27.78$ m/s
Time = distance $ \div $ speed
= $ \frac{1400}{27.78} = 50 $ seconds
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