potential energy

[$TheBest$]

hey unigirl..(I guess)
what do you mean pop in the post ?

[unigirl]

I was being sarcastic.

You newbies should be aware that there are a few ground rules that need following before you post on Ab. Firstly, you've got a better chance of a response if the word "please" is somewhere in your question. Secondly, people are more willing to help if the questioner can show that he or she has done their best to research the problem themselves first. Thirdly, following an answer, a post saying "thanks" is appreciated.

The potential energy question was ridiculous. No one on AB is here to do other people's homework or do their projects for them. What does the questioner gain by having the answer handed to them on a plate?

Helping someone find an answer is one thing, doing their homework or projects for them simply because they are too idle is something else. The sooner they learn it, the better.