Question

120 m long train is moving towards West at a Speed of 10 −1 . A Small Bird Flying Towards East at a Speed of 5 ms.Crosses The Train. What Is Time Taken by The Bird To Cross The Train:

Answer 1

Answer:

length=120m

speed=10m/s

The relative velocity of train with respect to bird is =(10+5)m/s

=15m/s

Since they are opposite to each other then addition will be occurred.

Hence, in aframe of Reference in which bird is at rest the train is moving with velocity =5m/s

The train is 120m long hence time taken for time to pass (from where bird is) end to end is

Speed=

time

distance

time=

15

120

=8sec