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Question

What is the value of 10 km/hr in SI units?

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

2.7 m/s

To convert 10 km/hr to SI units (meters per second, m/s), we need to convert kilometers to meters and hours to seconds.

1. Kilometers to Meters:

1 km = 1000 m

Therefore, 10 km = 10 * 1000 m = 10000 m

2. Hours to Seconds:

1 hour = 60 minutes

1 minute = 60 seconds

Therefore, 1 hour = 60 * 60 seconds = 3600 seconds

3. Combining the Conversions:

We have 10000 meters per 3600 seconds. To find the value in m/s, we divide:

\(\frac{10000 \text{ m}}{3600 \text{ s}} = \frac{100}{36} \text{ m/s} = \frac{25}{9} \text{ m/s} \approx 2.777... \text{ m/s}\)

Rounding to one decimal place, we get 2.7 m/s.

Therefore, the value of 10 km/hr in SI units is approximately 2.7 m/s.

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