Question

a train is running at a speed of 72 km per hour crosses and electric violin 12 seconds what is the length of the train in metres​

Answer 1

Answer:

Length of train is 720 m.

Answer 2

Answer:

SOLUTION

Given:

Speed of train = 72 km/hr

The train crosses an electric pole = 36 seconds

Formula:

Speed = distance/Time

1 km/hr = 5/18 m/sec

Calculation:

Let length of train be x meter

72 × 5/18 = x/36

⇒ x = 72 × 5/18 × 36

⇒ x = 720 m

∴ Length of train is 720 m.