Kinematics Question 382

Question: Two trains, each 40 m long are travelling in opposite direction with equal velocity 20 m/s. The time of crossing it’s

Options:

A) 1s

B) 2s

C) 3s

D) Zero

Show Answer

Answer:

Correct Answer: B

Solution:

$ \text{Time=}\frac{\text{total length}}{\text{relative velocity}}\text{=}\frac{\text{X+X}}{\text{20+20}}\frac{2X}{40}s $

$ =2s $



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