Question

Q12
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​

Answer 1

Explanation:

4s

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Answer 2

Answer:

4 second

Explanation:

Total lenght to cross L=50+50=100m  

relative velocity (w.r. t. other train)

v=15−(−10)=25m/s

∴t=L/v=100/25=4

Hence the crossing time is 4 second