If the distance of 200 m is covered in 20 s, then the speed is

Options

A. 10 km/h
B. 20 km/h
C. 26 km/h
D. 36 km/h

Answer

To find the speed when a distance of 200 meters is covered in 20 seconds, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the given values**:
- Distance (d) = 200 meters
- Time (t) = 20 seconds

2. **Use the formula for speed**:
- The formula for speed (v) is given by:
\[ v = \frac{d}{t} \]
- Here, \(d\) is the distance and \(t\) is the time.

3. **Substitute the values into the formula**:
\[ v = \frac{200 \text{ meters}}{20 \text{ seconds}} \]

4. **Perform the division**:
- Cancel out the zeros:
\[ v = \frac{200}{20} = 10 \text{ meters per second} \]

5. **Convert the speed from meters per second to kilometers per hour**:
- To convert from meters per second to kilometers per hour, use the conversion factor:
\[ 1 \text{ m/s} = 3.6 \text{ km/h} \]
- Therefore,
\[ v = 10 \text{ m/s} \times 3.6 \text{ km/h per m/s} = 36 \text{ km/h} \]

### Final Answer:
The speed is **36 kilometers per hour**.

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