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Work & Energy

QuestionAnswer
kinetic energy the energy associated with a moving object (k)
gravitational potential energy the energy associated with the height of an object above the earth's surface (Ug)
elastic potential energy the energy associated with a material that stretches or compresses (Us)
work equations W=∆E // w=(F)(d) // w=(F)(d)(cosθ)
units of work & energy JOULE (J) // 1J=1kgm2/s2
work a physical quantity characterizing the change in energy of a system
positive work applied force & displacement are in the same direction
negative work applied force & displacement are in opposite directions
zero work applied force & displacement are perpendicular
internal energy energy associated with an object due to temperature & internal structure
thermal energy energy associated with temperature
chemical energy energy associated with molecular structure
objects that can change the energy of a system external objects
Gravitational Potential Energy Equation Ug=mgh
Kinetic Energy Equation k=(1/2)mv^2
Elastic Potential Energy Equation Us=(1/2)kx^2
Created by: abievans
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