Unit 8 Blog Post #1

For class, we reviewed unit 8 about energy. Energy has magnitude, but no direction making it scalar.We learned about different types of energy. We learned about kinetic, potential, and spring potential energy.

Kinetic Energy is the energy of motion. The equation is  KE= 1/2 x mass x (velocity)2 = 1/2m(v)2. 
Potential Energy is the gravitational energy. The equation is PEg= mass x gravity x change in height = mgh
Spring Potential Energy. PEs= 1/2 x spring constant x (distance the sprig is stretched or compressed)2 = PEs= 1/2k(d)2

We learned that energy is conserved. This is stated in the Law of Conservation of Energy. It says energy cannot be created or destroyed it only changes form.

Of course, we learned about a new graph. The graph we learned was force vs. distance. We learned two rules for it. First, the area under a curve of a force vs. distance graph is work done. Second, the slope of a force vs. distance graph is spring constant. 

This picture is Alex drinking gaterade. Gaterade is a drinking that has cards and electrolytes to give your body energy to work out. This energy times the amount of force he puts into his work out or activity will effect the amount of work he does.