Question

5. A man walks at the speed of 4 km/h. A train coming from behind him at 22 km/h passes by him in 30 sec. find the lenth​

Answer 1

150 m

Answer:

150 m

Step-by-step explanation:

Speed of the train= 22 km/h

speed of man = 4 km/h

time to cross the man ( t ) = 30 sec

Relative Speed ( v )

= (22-4)= 18 km/h

= 18× 5/18 m/sec

= 5 m/sec

Length of the train = v×t = 5× 30 = 150 m