Question

A train 210 m long took 12 seconds to pass a 90 m long tunnet. Find the speed of
the train
platform 130 m long?
o. A train 270 m long is running at so km/hr. How much time will take to cross​

Answer 1

Answer:

Total distance =(210+90)m

=300 m

time =12 sec

 speed =   distance /time

speed =  300 /12

 

∴  speed =25 sec

Speed of the train = 80 km/hr = 80 x 1000/3600 80 x 5/18 = 200/9 m/sec

Distance = length of the trian + length of the platform = 130 m + 270 m = 400 m

Time = Distance / Speed

= 400x9 / 200

= 2 x 9

= 18 sec.