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A 120 m long train is moving towards wes...

A 120 m long train is moving towards west at a speed of 10  `ms^(-1)`.A small bird flying towards east at a speed of 5 ` ms^(-1)` crosses the train. What is time taken by the bird to cross the train :

A

4 s

B

8 s

C

12 s

D

24 s

Text Solution

Verified by Experts

The correct Answer is:
b
`v_(t)=-10 m//s,v_(b)=5-(-10)=15 m//s`
`:. t=(120)/(15)=8s`
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MODERN PUBLICATION-DESCRIPTION OF MOTION IN ONE DIMENSION -Revision Test
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