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A 210 meter long train is moving due nor...

A 210 meter long train is moving due north at a of 25 m/s. a small bird is flying due south a little above the train with speed 5 m/s. The time taken by the bird to cross the train is

A

6s

B

7 s

C

9 s

D

10 s

Text Solution

Verified by Experts

The correct Answer is:
B
Relative velocity of bird w.r.t train= 25+30 m//s time taken by the bird to cross the train ` t=(210)/(30) =7 sec `
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VMC MODULES ENGLISH-KINEMATICS OF A PARTICLE -LEVEL 1
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