The Nature Of Energy

What is energy? A conserved substance like quantity Let’s discuss this definition because your book and the internet might use this definition…..the ability to do work.

Energy Here is where the problem lies….not the definition of energy so much as your current understanding of work.

Energy We associate energy with storage modes……Let’s list some

Mechanical Energy Motion energy Energy stored in motion or the lack of motion

Thermal Energy Heat energy Energy stored in moving atoms

Chemical Energy Bonding energy Energy stored in the bonds of molecules

Sound Energy Vibration energy Energy stored in vibrating molecules

Electrical Energy Electricity Energy stored in moving electrons

KE=½ (MASS)(VELOCITY2) Mechanical Energy Kinetic Energy Energy stored in motion of objects Depends on Mass of an object Velocity of the object Equation: KE=½ (MASS)(VELOCITY2)

Mechanical Energy

Mechanical Energy Kinetic Energy The faster the object moves the MORE KINETIC ENERGY the object stores The more mass the object has the MORE KINETIC ENERGY the object stores

Mechanical Energy Potential Energy Energy stored in the position of objects Depends on The type of potential energy