Question

if the speed of sound in air is 340 m/s, approximately how long will it take the sound of a clap of thunder to travel 2 kilometers? (1 point)
2.9 seconds
3.4 seconds
1.7 seconds
5.9 seconds

Explanation:

Step1: Convert distance to meters

The distance is 2 kilometers. Since 1 kilometer = 1000 meters, we convert 2 kilometers to meters: \( 2 \times 1000 = 2000 \) meters.

Step2: Use the formula for time

The formula relating speed (\( v \)), distance (\( d \)), and time (\( t \)) is \( t=\frac{d}{v} \). We know the speed \( v = 340 \) m/s and the distance \( d = 2000 \) meters. Substitute these values into the formula: \( t=\frac{2000}{340}\approx5.9 \) seconds.

Answer:

5.9 seconds