1.How many meters away is a cliff if heard one half second after the original sound? Assume that sound travels at 343m/s on that day

Are you talking about an echo or a sound that is emitted somewhere near the cliff? I think you left some words out of your question.

In 1/2 seconds, the sound travels 171.5 meters.

85.75m

To find the distance to the cliff, we can use the formula:

Distance = Speed × Time

Given that the speed of sound is 343 m/s and the time difference is one-half second, we can substitute these values into the formula:

Distance = 343 m/s × 0.5 s

Now, calculating the value:

Distance = 171.5 m

Therefore, the cliff is approximately 171.5 meters away if the sound is heard one half second after the original sound.