72 किमी/घंटे की गति से चलने वाली 230 मीटर लंबी एक रेलगाड़ी विपरीत दिशा से आ रही 130 मीटर लंबी रेलगाड़ी को 8 सेकण्ड में पार करती है, तो दूसरी रेलगाड़ी की चाल ज्ञात करें?
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I don't no hindi please type in English
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Answer:
Step-by-step explanation:
As speed = Distance/Time ie. S = D/T
Total speed of both trains = 72kph or 72 *5/18 ie. 20mps
Whereas total length or supposed distance of both trains = 230 + 130 = 360 metres
&
Time = 8 sec.s
Thus, 20+x =360/8
Hence, 45-20 = x which is 25 M/S
Therefore the speed of other train is 25 metres per second.
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