Question

a gun was fired 2.5 km away the time taken by sound to reach was 8 sec​

Answer 1

Complete Question:

Q: A gun was fired 2.5 km away from an observer. The time taken for the sound of shot to reach the observer was 8 seconds. Find the speed of sound.

Answer:

• The speed of sound = 312.5 m/sec

Step-by-step explanation:

Given that:

• A gun was fired 2.5 km away from an observer.
• i.e., Distance = 2.5 km
• The time taken for the sound of shot to reach the observer was 8 seconds.
• i.e., Time taken = 8 sec

Converting 2.5 km of distance into m:

• 1 km = 1000 m
• 2.5 km = (2.5 × 1000) = 2500 m

To Find:

• The speed of sound.

Formula used:

• Distance = Speed × Time

Finding the speed of the sound:

⇒ Distance = Speed × Time

⇒ 2500 = Speed × 8

⇒ Speed = 2500/8

⇒ Speed = 312.5

∴ The speed of sound = 312.5 m/sec

Answer 2

Answer:

Correct Question:

• A gun was fired 2.5 km away from an observer. The time taken for the sound of shot to reach the observer was 8 seconds. Find the speed of sound.

Given :-

• Distance = 2.5 km
• Time taken = 8 sec

To Find:

• The speed of sound.

Formula used:

• Distance = Speed × Time

First, converting 2.5 km of distance into metre,

1 km = 1000 m

2.5 km = 2.5 × 1000 = 2500 m

Now, by substituting the formula we get,

=> Distance = Speed × Time

=> 2500 = Speed × 8

=> Speed = 2500/8

Therefore, speed of sound = 312.5 m/sec