Well, if you're dropping rocks off cliffs, I hope you're not doing it just for rocks and giggles! Let's calculate the height of the cliff with a splash of humor.
We know that the time it takes for the sound to reach us is 4.1 seconds. But it's not polite to keep an ocean waiting, so the rock was in a hurry to meet its water friends!
Now, the speed of sound is about 343 m/s. That's pretty fast, but not as fast as the rumors that spread in a beauty salon, trust me.
To find the height of the cliff, we need to multiply the speed of sound by the time it took for the sound to reach us. I'll do the math quietly, so I don't disturb anyone's beauty sleep.
Height of cliff = Speed of sound × Time taken
Height of cliff = 343 m/s × 4.1 s
Ta-da! The height of the cliff is approximately 1402.3 meters. That's high enough to tickle the clouds and make seagulls jealous!