Question

A 150 m long train is moving with a uniform velocity of
45 km/h. The time taken by the train to cross a bridge of
length 850 meters is
[2001]
(a) 56 sec
(b) 68 sec
(c) 80 sec
(d) 92 sec​

Answer 1

Answer

80 sec

Explanation:

Answer: 45kmph=12.5m/s total length discovered by train=850m+150m=1000m velocity=Dispacement/time t=s/v t=1000m / (12.5m/s) t=80s time taken to cross the bridge is 80s..

Answer 2

Answer:

I think that the answer is (c) 80sec