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A man standing 48 m away from a wall fir...

A man standing 48 m away from a wall fires a gun. Calculate the time after which an echo is heard. (The speed of sound in air is 320 m `s^(-1)`).

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To solve the problem of calculating the time after which an echo is heard when a man fires a gun 48 meters away from a wall, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Problem**: - A man fires a gun, and the sound travels to the wall and back, creating an echo. - The distance from the man to the wall is 48 meters. ...
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