Question

A train at a speed of 20kmph takes 30sec to pass a pole. Find lenght of the train

Answer 1

Explanation:

Speed of train = 20km/h

In m/s,

speed of train = 20 × 5 / 18

= 5.55 m/s

Length of train = Speed × Time

= 5.55 × 30

= 166.67 m

Answer 2

Given :

• A train at a speed of 20kmph takes 30sec to pass a pole.

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Find :

• What is the length of the train?

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Concept :

• To solve the question, first let's change kilometre per hour to meter per second.

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→ 5 × 20/18

→ 5.56 m/s

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Applying formula :

• Speed = Distance/Time.
• Distance = Speed × Time.

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→ 5.56 × 30

→ 166.67 m

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Therefore, 166.67 m is the length of the train.