Question

A train of length 270 meters croses a telephone post in 18 seconds. The speed ofvthe train is​

Answer 1

Given :

• Distance travelled by a train is 270 meters.
• The time taken by train to travel a distance of 270 meters is 18 seconds.

To find :

• The speed of the train = ?

Formula to be used :

• $\bf S \ = \ \dfrac {D}{t}$

Where,

• S = Speed.

• D = distance travelled by an object.

• t = Time taken to complete a given distance.

Solution :

To find the speed of the train = ?

Using the formula,

$\qquad \blue {\underline {\boxed {\bf Speed \ = \ \dfrac {distance}{time}}}}$

Put the given values in the above formula,

$: \implies \bf Speed \ = \ \dfrac {270}{18}$

$: \implies \bf Speed \ = \ \dfrac {\cancel{270}}{\cancel{18}}$

$: \implies \bf Speed \ = \ 15 \ km/hr$

$\therefore$ The speed of the train is 15 km/hr.