Question

A train 360m.Long is running at a speed of 45 km/hr . In what time will he pass the bridge of 140

Answer 1

Answer:

time taken is 11.1 sec

Explanation:

taking bridge lenght = 140 m.

the trian has to pass through the bridge...there fore we take whole lenght of trian and lenght of bridge...i.e s=500 m..(because from engine to last block of the train has to pass through the bridge.)

wkt.,t=s*v... time=distance/speed

i.e time=500/45=11.1 sec

Answer 2

Answer:

40 sec

Explanation:

Distance - 360+150=500 (length of train +length of bridge)

speed =40km/h

time=?

we need to convert speed into m/s

40×1000/3600= 25/2

we know that speed =distance /time

25/2=500/time

=40 sec

thank you