Question

a train is moving at a uniform speed of 84 km/hour. how far will it travel in 14minutes? Find the time required to a cover a distance of 210km?
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Answer 1

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Given:

Speed of the train = 84 km/h

Distance of the train in case II = 210 km

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To Find:

1. How far it will travel in 14 minutes.
2. The time required to cover a distance of 210 km.

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Formula:

Distance = Speed × Time

Time = Distance / Speed

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Explanation:

Case I:

• To convert km/h into m/s, we need to multiply it with 5/18 .

By converting 84 km/h into m/s, we get

84 × 5/18 = 70/3 = 23.3 m/s ( approx. )

Distance = 23.3 × 14 = 326.2 m

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Case II:

• Time = Distance / Speed

Time = 210/84 = 5/2 = 2.5 hours

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Answer:

1. In Case I, it'll cover 326.2 m in 14 minutes.
2. In Case II, it'll take 2.5 hours to cover a distance of 210 km.

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Answer 2

Answer:

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Given:

Speed of the train = 84 km/h

Distance of the train in case II = 210 km

To Find:

How far it will travel in 14 minutes.

The time required to cover a distance of 210 km.

Formula:

Distance = Speed × Time

Time = Distance / Speed

$\underline{\underline{\mathfrak{ \large{ \blue{Explanation}:- } }}}$

Case I:

• To convert km/h into m/s, we need to multiply it with 5/18 .

By converting 84 km/h into m/s, we get

84 × 5/18 = 70/3 = 23.3 m/s ( approx. )

Distance = 23.3 × 14 = 326.2 m

Case II:

Time = Distance / Speed

Time = 210/84 = 5/2 = 2.5 hours

Answer:

In Case I, it'll cover 326.2 m in 14 minutes.

In Case II, it'll take 2.5 hours to cover a distance of 210 km.

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