first blog in march:)

This week i learned about systems. I defined a system as a group of things that work together. You identify a system by identifying an outside force doing something to the object. Most of the time you should include the earth in your system.

The initial and final stages are identified by when the displacement changes and an outside force does work on the object. The initial is when you first start the experiment. The final is after you put/do work on a system.

There are 4 different types of energy.

These types are:

-kinetic energy

-gravitational potential energy

-internal energy

-elastic potential energy

Kinetic Energy is moving. Gravitational Potential Energy is potentially flying, falling, or lifting. Internal Energy is heating (NOT HEAT). Elastic Potential Energy is stretching (the rubber band experiment)

Energy can be transferred from one object to another by doing work. When work is done on an object, it results in a change in the object's motion (Kinetic Energy)

We learned how to calculate the work.

-work is a process of giving someone or something energy. (transferring it)

work = force * displacement

newton meters = joules

The experiment that was helpful in understanding these ideas was when Mr.Finley picked up a box and put in on a table. The system included the box, the earth, and the table.