Question

A train 15om long passes a tree in 12 seconds . How long will it take to pass a tunnel 250m long

Answer 1

Step-by-step explanation:

The train will pass a tunnel 250 m long in 32 seconds.

Step-by-step explanation:

It is given that a train 150 m long passes a tree in 12 seconds.

speed of train is

$speed = \frac{distance}{time}$

$speed = \frac{152}{12}$

$time = \frac{400}{12.5}$

Speed=12.5m/s

Total distance covered by train is

★ Total distance=150+250=400m

$time = \frac{distance}{speed}$

★Time=32

Therefore the train will pass a tunnel 250 m long in 2 seconds.