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Law of Conservation of Energy
The law that states that energy cannot be created or destroyed but can be changed from one form to another
Energy
The ability to do work or cause change
What are the main 3 types of Energy?
Kinetic Energy (K), Potential Energy (U), Internal Energy (Ein)
Kinetic Energy (K)
The energy an object has due to its motion
Potential Energy (U)
Stored energy that results from the position or shape of an object
Internal Energy (Ein)
The total energy stored in the atoms and molecules within a substance
Work
A result of a force moving an object a certain distance
Work Formula
Work = force × distance × cos(θ)
System
A group of parts that work together as a whole
Work and Energy are both measured in ________________ units
Joules (J)
Joules (J)
The unit for measuring energy and work. 1J = 1Newton * 1Meter
Work Energy Theorem
The work done on an object equals the change in kinetic energy of the object
Kinetic Energy Formula
Gravitational Potential Energy (Ug)
Potential Energy stored by objects due to their position above Earth's surface.
Power Formula
Mechanical Energy (Em)
The sum of gravitational potential and kinetic energy at a point
Open System
A system in which exchanges of matter or energy occur across system boundaries
Closed System
Mechanical Advantage (MA)
The ratio of the output force exerted by a machine to the input force applied to the machine
Normal Force Formula
Power
The rate of change at which energy is transferred into or out of a system or converted within a system.
Power is measured in ________.
Watts (W)
Watts (W)
Joules(J)/Second(S)
Efficiency
The percentage of the input work that is converted to useful output work
Horizontal Power (Formula)
P = F * v * cosθ
Gravitational Potential Energy (Between Bodies) Formula
(G * Mp * Ms)/r
Escape Velocity (Vesc) Formula
Spring (Elastic) Potential Energy (Us)
Note
Flashcard