Question

021) A train of 360 metre length passes a electric pole in 80 second. Find the speed of train in km/h.
(A) 16.2 km/h
(B) 18.3 km/h
(C) 17.4 km/h
(D) 16.4 km/h​

Answer 1

Answer:

• (A) 16.2 km/hr

Given:

• Length of train = 360 m

• Time required to pass electric pole = 80 sec

To find:

• The speed of the train.

Solution:

Concept:

Pole is stationary and train is moving. Train needs to fully go ahead of pole from it's starting point to ending point. Hence, we can say the distance will be same as the length of the train.

>> Speed = Distance/Time

=> Speed = 360/80

=> Speed = 4.5 m/s

=> Speed = (4.5 × 18) / 5 km/hr

=> Speed = 16.2 km/hr

Therefore, the speed of the train in 16.2 km/hr