A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train? (a) 120 metres (b) 180 metres (c) 324 metres (d) 150 metres

By Ritesh|Updated : November 10th, 2022

A train running at the speed of 60 km/hr crosses a pole in 9 seconds. The length of the train is 150 metres. Steps to find the length of the train:

Given:

60 km/hr is the train's speed.

9 seconds are needed for a train to cross a pole.

The length of a train is determined by its distance traveled.

Equation used: Distance = speed × time

  • 1 km = 1000 metre
  • 1 hour = 3600 seconds

Length of the train = 60 km/hr × 9 seconds

= [(60 × 1000)/3600] × 9

= (600 × 9)/36

= 150 meters

Hence, the length of the train is 150 metres.

Other methods:

Formula used: Distance = speed × time

Length of the train = 60 km/hr x 9 seconds

= 60 × (5/18) × 9

= (60 × 5 × 9)/18

= 150 meters

Hence, the length of the train is 150 meters.

More details:

If we convert 'm/s' in 'km/hr, then multiply 'm/s' by (18/5)

Example:

20 m/s = 20 × (18/5)

= 20 m/s = 72 km/hr

Summary:

A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train? (a)120 metres (b)180 metres (c)324 metres (d)150 metres

In 9 seconds, a train traveling at 60 km/hr crosses a pole. 150 metres is how long the train is.

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