the length of a train is 50m and it passes a pole in 2 seconds .find the time taken to pass a bridge of length 500 m ,if speed of train be reduced to three - Fifthits initial speed
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the length of a train is 50m and it passes a pole in 2 seconds .find the time taken to pass a bridge of length 500 m ,if speed of train be reduced to three - Fifthits initial speed
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Explanation:
Distance covered by train the cross the bridge (from front of engine to back of last wagon )
d=250+50=300 m
Speed of train v=10 m/s
Thus time taken t=
v
d
⟹ t=
10
300
=30 sec
Option B is correct.
Explanation:
approximately 30 seconds