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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 BYJU'S Exam Prep
Updated on: September 25th, 2023
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.