Question

a train runs past a telegragh pole in 15s and through a tunnel of length 450 m in 45s. the length of the train is

Answer 1

Answer:

150m

Explanation:

If the train crosss the 450m long tunnel in 45s, then its velocity is 450/45=10m/s(By speed=distance /time)

Now it crosses the pole in 15s.

The pole can be referred to as a point, so by this we calculate the distance of train.

Therefore,

Distance =Velocity*time

=15*10=150m is the length of the train.

Answer 2

Answer:

If the train crosss the 450m long tunnel in 45s, then its velocity is 450/45=10m/s

Now it crosses the pole in 15s.

The pole can be referred to as a point, so by this we calculate the distance of train.

Therefore,

S=V*T

=15*10=150m is the length of the train.