Question

Find the length of the bridge, which a train 150m long and travelling at 30
km/hr can cross in 45 seconds is.

Answer 1

Answer:

4545 kl/meter

Step-by-step explanation:

Length of the train  

=

150 m

travelling speed=  30km/hr

Relative speed  =45sec

= 150 × 3okm/hr

= 4500 km/hr

Relative speed = Speed of train - Speed of the man (as both are moving in the same direction). Therefore,

Speed of the train = Relative speed + travelling speed

= 4500+45 km/hr

= 4545 km/hr

Hope this helps