You are standing 1000 m from the point where a steel block strikes the sidewalk. How long will It take the sound to reach your ears if the speed of sound in air at `0^@` C is about 333 m/sec. ?

Options

A. 3 seconds
B. 2 seconds
C. 1 second
D. 5 seconds.

Explanation

To solve the problem of how long it will take for the sound to reach your ears after a steel block strikes the sidewalk, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Given Values:**
- Distance from the point of impact: \( d = 1000 \) meters
- Speed of sound in air at \( 0^\circ C \): \( v = 333 \) meters/second

2. **Use the Formula for Time:**
The formula to calculate time when distance and speed are known is:
\[ t = \frac{d}{v} \]
where:
- \( t \) is the time,
- \( d \) is the distance,
- \( v \) is the speed.

3. **Substitute the Values into the Formula:**
\[ t = \frac{1000 \text{ m}}{333 \text{ m/s}} \]

4. **Perform the Calculation:**
\[ t \approx 3.003 \text{ seconds} \]

5. **Round the Result:**
Since we are typically interested in whole seconds for practical purposes, we can round this to:
\[ t \approx 3 \text{ seconds} \]

### Final Answer:
It will take approximately **3 seconds** for the sound to reach your ears.

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