energy powers

• explain why the the bungee jumper slows down once the chord begins to stretch.

  Kinetic energy decreases since it is converted to elastic potential energy.

  Since kinetic energy is proportional to (velocity) squared ,as KE decreases so does velocity.

  
• one example of a chemical energy store which uses DC is a

  battery

  
• one example of a natural resource that stores chemical energy is

  wood

  
• one example of a fossil fuel that stores chemical energy is

  coal

  
• one example of a fuel that stores chemical energy is

  petrol

  
• list examples of chemical energy stores

  fuel(petrol, coal, wood)

  batteries

  food

  
• one example of a resource that we eat that stores chemical energy is

  food

  
• what do we say when energy is wasted

  dissipated