A missile travels at 1386 km/hr. How many metres does it travel in one second?

Options

A. 305 metre
B. 385 metre
C. 372 metre
D. 325 metre

Answer

To find out how many meters a missile travels in one second when it is moving at a speed of 1386 km/hr, we can follow these steps:

### Step 1: Convert the speed from km/hr to m/s
To convert kilometers per hour (km/hr) to meters per second (m/s), we use the conversion factor:
1 km/hr = 5/18 m/s.

So, we multiply the speed in km/hr by 5/18.

**Calculation:**
\[ \text{Speed in m/s} = 1386 \, \text{km/hr} \times \frac{5}{18} \]

### Step 2: Perform the multiplication
Now we will perform the multiplication.

**Calculation:**
\[ \text{Speed in m/s} = 1386 \times \frac{5}{18} = 1386 \times \frac{5}{18} = 1386 \times 0.277777 \approx 385 \, \text{m/s} \]

### Step 3: Calculate the distance traveled in one second
Since the speed is now in meters per second, the distance traveled in one second is equal to the speed in m/s.

**Result:**
The missile travels approximately 385 meters in one second.

### Final Answer:
The missile travels **385 meters** in one second.

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