- #1

- 14

- 0

and here's the other: A rock is dropped from a sea cliff and the sound of it striking the ocean is heard 4.8 s later. If the speed of sound is 340 m/s, how high is the cliff? (no idea how to even begin that one...)

Um, i know that in both of them we're supposed to use the quad. formula and in the first one I tried to but webassign told me I was wrong. I got 11.1s i think. The second I don't even know how to start.

If anyone can do them, can you please explain how you got it? I want to know how to do them so I don't make mistakes later on in the year.

Thanks.