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avatar+130 

Answer this please:

 

Thanks

 Apr 20, 2021
 #1
avatar+33757 
+2

The fron of the train enters tunnel at 120 km/hr   and   15 s later the tail-end enters the tunnel

 

The train length will be how far the train travels in 15 s   @   120 k/hr

15 s =   15/3600 hr

rate * time = distance   ( or length in this case)

15 / 3600 hr  *  120 k/hr = .5 km     or  500 meters long

 Apr 20, 2021
 #2
avatar+121006 
0

This would lead to another  question :"How long is the tunnel ??"

 

 

cool cool cool

CPhill  Apr 20, 2021
edited by CPhill  Apr 20, 2021

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