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Potential and Kinetic Energy
How is all energy divided?Potential Energy Kinetic Energy Gravitation Potential Energy Elastic Chemical
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 motionK.E. = 1/2mv2
Kinetic Energy Depends on 2 factorsMass and Velocity 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?
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
TME = KE + PE Mechanical EnergyThe total amount of KE and PE is referred to as the total MECHANICAL ENERGY of an object. TME = KE + PE
There are other forms of energy.
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