Term

Definition
a force in which the work it does on a moving object is independent of the path between the object's initial & final positions; a force which does no net work on an object moving around a closed path, starting & finishing at the same point 


Term
The kind of path which begins & ends at the same place is called a _____ path 

Definition


Term
The concept of _____ is not defined for a nonconservative force 

Definition


Term
Is friction a conservative or a nonconservative force? 

Definition


Term
Is gravity a conservative or a nonconservative force? 

Definition


Term
total mechanical energy "E" 

Definition
the sum of kinetic energy & potential energy 


Term
If no nonconservative forces act on an object, the total mechanical energy _____ 

Definition
remains constant all along the path between the initial & final points 


Term
A quantity that remains constant throughout motion is said to be _____ 

Definition


Term
principle of conservation of mechanical energy 

Definition
the fact that the total mechanical energy is conserved when "Wnc" = 0J 


Term

Definition
incorporates both the concepts of work & time; work done per unit time; average rate at which work "W" is done; denoted "P bar" 


Term

Definition


Term
Is power a scalar or a vector? 

Definition


Term
the principle of conservation of energy 

Definition
energy can neither by created nor destroyed, but can only be converted from one form to another 


Term
The work done by a variable force in moving an object is equal to _____ 

Definition
the area under the graph of: F(cos "theta") versus "s" 

