Kinetic Energy Potential Energy Elastic Potential Energy Gravitation Potential Energy Chemical Potential Energy How is all energy divided? All Energy
What is Potential Energy? • Energy that is stored and waiting to be used later
What is Gravitational Potential Energy? • Potential energy due to an object’s position • P.E. = mass x height x gravity Don’t look down, Rover! Good boy!
What is Elastic Potential Energy? • Potential energy due compression or expansion of an elastic object. Notice the ball compressing and expanding
What is Chemical Potential Energy? • Potential energy stored within the chemical bonds of an object
What is Kinetic Energy? • Energy an object has due to its motion • K.E. = 1/2mv2
Kinetic Energy Depends on 2 factors If Dino and the car have the same velocity, which has the greater KE? If the trucks have the same mass, which one has greater KE? Mass and Velocity
Which factor has the greater impact on KE? Velocity has greater influence because it is SQUARED in the formula!! Think about the formula!!
The total amt of energy remains constant!! KE i + PE i = KE f + PE f
Mechanical Energy The total amount of KE and PE is referred to as the total MECHANICAL ENERGY of an object. TME = KE + PE