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A 120 m long train is moving in a direct...

A 120 m long train is moving in a direction with speed 20 m/s . A traing B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time

A

6 s

B

36 s

C

38 s

D

5 s

Text Solution

Verified by Experts

The correct Answer is:
D
Total distance `=130+120=250 m `
Relative velocity `=30-(-20) =50 m//s " "," ""Hence" t= 250//50 =5s`
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