Presentation on theme: "Potential and Kinetic Energy How is all energy divided? Potential Energy Kinetic Energy All Energy Gravitation Potential Energy Elastic Potential Energy."— Presentation transcript:
Potential and Kinetic Energy
How is all energy divided? Potential Energy Kinetic Energy All Energy Gravitation Potential Energy Elastic Potential Energy Chemical Potential Energy
What is Potential Energy? oEnergy that is stored and waiting to be used later
What is Gravitational Potential Energy? oPotential energy due to an object’s position oP.E. = mass x height x gravity height x gravity Don’t look down, Rover! Good boy!
What is Elastic Potential Energy? oPotential energy due compression or expansion of an elastic object. Notice the ball compressing and expanding
What is Chemical Potential Energy? oPotential energy stored within the chemical bonds of an object
What is Kinetic Energy? oEnergy an object has due to its motion oK.E. = 1/2mv 2
Kinetic Energy Depends on 2 factors Mass and Velocity If the trucks have the same mass, which one has greater KE? If Dino and the car have the same velocity, which has the greater KE?
Which factor has the greater impact on KE? Think about the formula!! Velocity has greater influence because it is SQUARED in the formula!!
Energy is Conserved!
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