Question

a train 350 metres long cross tell electric pole in 28 seconds find the speed of train in kilometre per hour​

Answer 1

Solution:

Given that ;

• Total Distance covered by train = 350 m
• Total Time Taken by train = 28 Seconds

So, We have to find the speed of train.

We have ; Speed = Distance ÷ Time

Speed = Distance ÷ Time

Speed = 350 ÷ 28

Speed = 12.5 m/s

Change metre into kilometers:

☞12.5 × 18/5

☞ 225 / 5

☞ 45 km/hr

Therefore, 45 km/hr is the speed of train.

Answer 2

Given,

The length of train = the distance covered by the train = 350m

Time taken by the train to cross the pole = 28 seconds.

We know that,

Speed = Distance ÷ Time

= 350 ÷ 28

= 12.5 m/s

We should convert this into kilometres.

We should multiply the number with 18/5 to convert into km/hr

Speed = 12.5 × 18/5

= 225/5

= 45km/hr

Therefore, the speed of train is 45kmph.