Question : Two trains each 50 𝑚 long are travelling in opposite direction with velocity 10 𝑚/𝑠 and 15 𝑚/𝑠. The time of crossing is
(A) 2𝑠
(B) 4𝑠
(C) 2\sqrt{3}s
(D) 4\sqrt{3}s
Answer : option (B)
Solution :
Two trains each 50 𝑚 long are travelling in opposite direction with velocity 10 𝑚/𝑠 and 15 𝑚/𝑠. The time of crossing is
with
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