This week we learned about work and energy. Work is activity involving effort to achieve a result. To find work you can multiply the force on the object by its displacement. The units of energy used is Nm, also known as Joules. Work = the change in energy. According the the law of energy, energry cannot be created nor destroyed; it can only change forms (in an isolated system). The energry of position is an object's potential energy. You can calculate an object's gravitational potential by multiplying its mass by the gravity by its height. After learning about work and energy, it reminded me of this weekend. My mom and I were sitting at the table and she asked me to pass her my pencil case. I was too lazy to pick it up and hand it to her, so I slid it across the table. I pushed my pencil case about 1/2 a meter. If it took a force of 3 N to push the pencil case, the work I would being doing would be 1.5 Joules. I'm glad I got to learn about Work and Energy this past week, so now I know how to what work and energy is and how it is applied.
Great summary of how energy works. You did a good job of relating energy to real life situations.
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