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Vb= V bird = 5 m/sec
Vt= V train = 10 m/sec
Relative velocity of bird with respect to train
= Vb-(-Vt)
=5-(-10)
= 15 m/sec
Time taken by bird to cross train = Length of train / Relative velocity
=120/15
=8 sec
Option(2) is right
I hope it's help you
Vt= V train = 10 m/sec
Relative velocity of bird with respect to train
= Vb-(-Vt)
=5-(-10)
= 15 m/sec
Time taken by bird to cross train = Length of train / Relative velocity
=120/15
=8 sec
Option(2) is right
I hope it's help you
jay00551:
your ans is right
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