Recent content by sepa0202

In it's simplest form, energy is the ability to do work.

Well of course, assuming it's an isolated system from the universe. But if we had to carry this experiment out, we should take in account more things, such as air resistance.

Hi guys, (Have you ever asked yourself what would happen if you drill a hole into the Earth's surface that reaches to the other end of the planet and then jump in?) It's a question that many pupils have asked me already. I bet you've thought about it at least once in your life... I asked...