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36 Cards in this Set
- Front
- Back
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What is Kinetic Energy? |
Energy related to Motion/Movement |
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Energy Measurement |
Joules, Scalar |
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The more mass the object has the... |
Faster it is |
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Ek - Formula |
Ek= 0.5×mv² |
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What is Potential Energy? |
-En that is Stored & Can be used later -Can be converted |
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Ep Types - Elastic Potential |
-Can return to og shape after -En used to deform is stored to return back to og shape |
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Ep Types - Chemical Potential |
-Has chemical reaction -En stored in chemical bonds -Released upon heating |
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Ep Types - Nuclear/Atomic |
-Stored in nucleas of atom |
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Nuclear Fission |
Splitting apart of atomic nucleus |
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Nuclear Fusion |
Fusing 2 things to make bigger |
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Ep Types - Gravitational Potential |
-En of object in relation to its height above the ground -Turns to kinetic when released -Higher up = more En |
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Ep Formula |
Ep= mgh |
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Earth's Gravity |
-9.81 -Can be used in place of acceleration in certain questions |
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What is Mechanical Energy? |
Mix of an object's Ep & Ek |
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Emech - Rules |
-Not all Emech created is used -En cannot be created or destroyed, only transfered
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Emech - Formula |
Emech= Ek+Ep |
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What is Gravity? |
Gravity is the force of attraction between 2 objects that have mass 9.81 |
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G&A - Rules |
-Smaller Masses are drawn to bigger ones |
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What is mass? |
-Amount if physical material taking up an object |
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What does not change from planet to planet? |
Mass |
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Mass - Measurement |
Measured in Kgs |
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What is weight? |
Measure of gravity&force acting on object |
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Mass - Formula |
M = F/A f is in Newton's |
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Weight - Measurement |
Newton's, N |
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What can change from planet to planet? |
weight |
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Weight - Formula |
Fg= m×g |
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En Conversion - Definition |
When En is converted it changes forms |
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En Conservation - Definition |
When En is conserved no En is lost |
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Law of Conservation |
An object cannot have more En than what it started w/ |
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Law of Conservation - Simplified |
Output en cannot be greater than input En |
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Perpetual Motion Machines |
A machine that doesn't stop moving after started and requires no additional en to keep it going |
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2nd Law of Thermodynamics |
Useful En is always lost due to some external force (friction, heat, sound, air, etc) |
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What is efficiency? |
The amount of useful En obtained during a conversion process |
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Efficiency - Measurement |
Expressed as a % |
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Efficiency - Formula |
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Acceleration - Formula |
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