Gravity

Annotations:

• http://www.livescience.com/37115-what-is-gravity.html

1. Potential Energy

   Annotations:

   • http://www.physicsclassroom.com/class/energy/Lesson-1/Potential-Energy
   1. All objects store energy if they are positioned in a height that is different from zero
2. Is a Universal Force that pulls everything down

   Annotations:

   • http://www.physics4kids.com/files/motion_gravity.html
3. Is one of the four fundamental forces
   1. This force is applied through the law of gravity
      1. The law of gravity is the weight which is a property that every object, human or animal has.
         1. This weight is measured by the products of two elements;
            1. the mass of an object and.....
            2. acceleration of gravity which on Earth is always 9.8m/ss
4. Centripetal Force
   1. This force tend to keep all the object connected to the center.
      1. Roller coasters and yo-yos are some examples
      2. Centripetal Force is translated from latin which means center seeking.

         Annotations:

         • https://www.youtube.com/watch?v=KvCezk9DJfk